Banish "Armed Dragon LV7" from the Graveyard with the effect of "Phantom of Chaos" to Tribute a "Phantom of Chaos" for "Armed Dragon LV10". The combo is easier with cards like "Foolish Burial" to get "Armed Dragon LV7" in your Graveyard.
"Ojamagic" can work well for the cost of this card's effect as it can add "Ojama Green", "Yellow", and "Black" to your hand so you don't lose hand advantage and you have more cards to discard for this card's effect later on.
Use "A Wild Monster Appears!" to easily bypass this card's summoning requirements, then clear out your opponent's field of monsters.