This strategy can be somewhat shifted around, but still giving the same result, by swapping around the levels of all three monsters being involved in this combo. This would allow use of Tuners of varying levels. This may, however, require you to already have a Magical Exemplar already on the field.
Remember that the Tuner does not necessarily need to be a Spellcaster, so you can add this card to the Extra Deck of a Deck that runs a few Spellcasters that are not Tuners, like "Breaker the Magical Warrior".
If you are going to Summon "Arcanite Magician/Assault Mode" on your turn use its effect to destroy cards so you can use your Spell Counters and not just remove them.
This card can be Special Summoned with "Limit Reverse", however it will not gain the 2 Spell Counters since it was not Synchro Summoned.
Don't forget that there is no limit to Spell Counters that can be placed on this card, but it doesn't gain them normally so if you use a card effect such as "Apprentice Magician" or "Spell Power Grasp" you can place Spell Counters on this card increasing its strength by 1000 points per Spell Counter.
When you use specific combos to get Spell Counters on "Arcanite Magician", you can use "Honest" with this card for a really high attack monster.
Take this to a whole new level with Spellbook of Power and Diffusion Wave-Motion to absolutely devastate your opponent & simultaneously fill up your hand with Spellbooks!! This applies to any lvl 7+ Spellcaster, and not just Arcanite, but he and his counterparts do make better use of it due to their potential of reaching ridiculously high ATK power.
One easy way to Synchro Summon "Arcanite Magician" is to first use "Summoner Monk's" effect to Special Summon "Rescue Cat". Next, use "Rescue Cat's" effect, and Special Summon two "X-Saber Airbellum". Finally, tune one of the "X-Saber Airbellum" to the "Summoner Monk" in order to Synchro Summon "Arcanite Magician". Following this, you can then destroy two of your opponent's cards and (if their Monster Card Zones are empty) attack directly with "X-Saber Airbellum", potentially making them lose three cards that will help them currently or later on in the game. This combo sees frequent play in Arcanite Cat Decks.
You can use Instant Fusion to Fusion Summon Musician King, a level 5 Spellcaster, then Synchro with a level 2 Tuner for Arcanite Magician. Alternatively, you can use Synchro Fusionist with two other monsters (1 Tuner + 1 non-Tuner Spellcaster) to draw Miracle Synchro Fusion or Super Polymerization to get Supreme Arcanite Magician immediately. Since using Arcanite Magician's effect decreases its Attack by 1000, using its effect then Fusion Summoning Supreme Arcanite Magician is a good way to use Arcanite's effect.
Another way to Synchro Summon "Arcanite Magician" is to Summon "Magical Exemplar" then activate a Spell Card then use Exemplar's effect to special Summon a Level 2 Tuner Monster then activate "Magical Dimension" and tribute the "Exemplar" to Special Summon a Level 5 Spellcaster like "Magical Marionette" (this will also destroy a monster on your opponents side of the field) and then Synchro Summon "Arcanite Magician".
One of "Arcanite Magician's" other useful features is that he only has 400 ATK as soon as he is Synchro Summoned to the Field. Because his ATK boost is due to his effect, and happens after he is Synchro Summoned, he is immune to "Bottomless Trap Hole".
You can load up the Spell Counters on "Magical Exemplar" as she gets 2 whenever a Spell Card is activated. After you Summon "Arcanite Magician", simply take the counters off of "Magical Exemplar" to wipe the field clean, given you have enough counters on "Magical Exemplar".
An easy way of Summoning two "Arcanite Magicians" at once, if you're really lucky to pull this, is to Flip Summon "Gravekeeper's Spy" to search for another Level 4 "Gravekeeper" monster and Special Summon it. Normal Summon "Rescue Cat" and use its effect to Special Summon 2 "X-Saber Airbellum" and then Synchro Summon.
Synchro Summon "Arcanite Magician", then use its effect to destroy 2 of your opponent's cards. Then, use "De-Synchro", and split "Arcanite Magician" onto its Synchro Material Monsters. You can then Synchro Summon it once again (and destroy another 2 cards, or leave this card with 2400 ATK and potential destruction for next turns), or bring out another Lv7 Synchro Monster of your choice.
This card works well with "Tempest Magician". By discarding cards to place Spell Counter's you can easily boost this card's ATK considerably. You can also use the Spell Counters for this card's effect of destroying your opponent's cards or "Tempest Magician's" effect of inflicting damage.
Use "Honest" if this card gets attacked by your opponent's monster with a higher ATK.
A good combination is to use "Magical Exemplar" and equip her with "Synchro Boost" to make her a Level 5 monster and then use the 2 Spell Counters to bring out a Level 2 Spellcaster-type Tuner such as "Frequency Magician" or "Arcane Apprentice".
Another easy way to Synchro Summon this card is to Normal Summon "Summoner Monk" and use its effect to Special Summon "Road Synchron". Then equip "Synchro Boost" to either one.
You could easily Synchro Summon this monster by discarding "The Fabled Cerburrel" for the effect of "The Tricky". "Cerburrel" will Special Summon itself due to the cost of "The Tricky", giving you the Synchro Summon requirements.
While this card's effect is powerful in any Deck, it can be absolutely devastating in a Deck dedicated to Spell Counter engines. "Arcanite Magician's" effect requires it to take Spell Counters off of any card, not just itself; use cards that instantly generate many Spell Counters, such as "Magical Citadel of Endymion", "Pitch-Black Power Stone" and "Magical Exemplar". That way, when "Arcanite Magician" is Summoned, it can take any number of counters off of other cards on your side of the field to sweep your opponent's field clean. While "Arcanite Magician/Assault Mode" is better suited for destroying an entire field, the effect of "Arcanite Magician" to take Spell Counters off of any card makes it better suited for maintenance, allowing you to destroy whatever cards your opponent plays during their turns and almost always having an open field to strike in.
"Summoner Monk", "Junk Synchron", "Magical Exemplar", "Double Summon", etc. can help Summon "Arcanite" and "Tempest" at the same time.
Combine this card with "Cybernetic Magician" if it is the only card with Spell Counters remove them all to clear your opponents field then discard a card to have its ATK become 2000 and deal up to 4400 damage.
With the above strategy it would also be handy to have a spell counter generating card that way once you bring it's ATK to 2000 you can further increase it's Strengh and deal more damage.