This can greatly speed up the Summoning in "Zombie World" or "A Legendary Ocean" Decks. In the former it can help Summon "Zombie Master" to Summon even more Zombies, as well as leave your Normal Summon open. It can also help Summon "Paladin of the Cursed Dragon", who can Summon other monsters thanks to" Zombie World". In "A Legendary Ocean" Decks, it can Summon Level 5 monsters, notably "Catapult Turtle", whose level will be reduced due to "A Legendary Ocean", as well as provide a quick Tribute to Summon Level 7 and 8 monsters, whose levels will be reduced such that they only require one tribute.
In a "Geartown" Deck, use this card's effect to destroy "Geartown", then bring out "Ancient Gear Gadjiltron Dragon" or other "Ancient Gears". You can also Special Summon a Gadget monster, then tribute it while "Geartown" is on the field to Summon "Ancient Gear Gadjiltron Dragon" or "Ancient Gear Golem". You can also Summon two "Gadgets" per turn to quickly thin your Deck and swarm the field (to do this, simply Normal Summon one "Gadget" and then Special Summon the "Gadget" that was added to your hand through "Ancient Fairy Dragon"'s effect).
This card can work well with "Ojama Country" since it changes its ATK for its DEF and you recover life points for it.
This card can work well with decks that use "Ancient Forest". Simply use "Ancient Fairy Dragon"'s Summoning effect, skip your Battle Phase, and the next time you want to attack, destroy the "Ancient Forest" (and gain 1000 Life Points) and then attack. After you've attacked, play the other "Ancient Forest" from your hand during your Main Phase 2.
You can create a Normal Summon lockdown with this card, "Recycle", and at least 2 "Future Visions". First, activate "Future Visions" and "Recycle". Since your opponent's monster is banished until his/her next turn, use this card's effect to destroy "Future Visions" and search for another "Future Visions" in your Deck. With "Recycle", you can return the destroyed "Future Visions" to your Deck to repeat the process each turn and, best of all, the cost for "Recycle" is covered by this card's effect.
This card combos well with "Soul Charge"; after you've activated both its effects, you've gained an extra 1000 LP and lost your Battle Phase anyway, so Soul Charge allows you to Special Summon a monster from your Graveyard essentially for free.
Use "Hidden Spellbook" or "The Transmigration Prophecy" to recycle the destroyed Field Spells to continue using this card's effect. Since you add a card from your deck to your hand anyways, the Deck thickening downside is a non-issue.
This card fits well in a "Gemini" Deck, which is composed of lots of level 4 or lower monsters that rely on being quickly Summoned.
This card is especially good for Special Summoning Gemini monsters with effects that destroy cards on the field, making up for the lost Battle Phase.
Combo with "Regulus" or with "Recycle". If you have at least 2 Field Spells you can use "Ancient Fairy Dragon" to get the Field Spells in your Graveyard and into your hand while "Regulus" can consistently put the other Field Spell back in the Deck so it can be constantly recycled. With this combo, you can avoid the harmful effects of such cards as "Future Visions", "Black Garden", "Necrovalley" and "Ancient Forest", while still using those effects against your opponent.
Combo this card with "Regulus" and "The Winged Dragon of Ra" to be able to destroy a monster every turn, even if you paid Life Points for the other effect of "The Winged Dragon of Ra".
This card is great against "Earthbound Immortal" and "Malefic" monsters, because they need Field Spells to stay on the field. It is also useful in Life Points increasing decks.
"Lightsworn" monsters can help benefit from this monster's Special Summoning effect. One way is using this card as a back up way of Summoning "Wulf, Lightsworn Beast", even if "Wulf" is added to your hand from the Deck instead of going directly to the Graveyard.
This card is great in an "Ojama" Deck, especially since this card has a high DEF which can been switched to ATK with "Ojama Country". "Ojama Country" can be searched with this card.
Use this card's effect to Summon a "Gagaga Magician" from your hand to instantly get out "Number 11: Big Eye" after using the effect of "Gagaga Magician". With this you can easily take control of you opponents monsters, and the field, early on.
You can Summon up to three of this monster with "Summoner Monk" and "Divine Wind of Mist Valley" in a single turn. Activate "Divine Wind of Mist Valley" then Summon "Summoner Monk" and discard a Spell to Summon "Genex Blastfan". Search for "Genex Ally Birdman" then return "Blastfan" to Summon "Birdman". Special Summon a Level 4 or lower WIND monster with the effect of "Divine Wind" then Synchro Summon "Ancient Fairy Dragon". Use "Ancient Fairy Dragon" to search another "Divine Wind", activate it, Special Summon "Blastfan" with "Ancient Fairy Dragon", search for "Birdman", rinse and repeat.
You can even Summon another "Genex Blastfan" with "Divine Wind of Mist Valley", although you would then have little use for the one in your hand.