Geria guile the cubic king
Cannot be Normal Summoned/Set. Must first be Special Summoned (from your hand) by sending 1 “Cubic” monster you control to the Graveyard. If Summoned this way, this card gains 800 ATK. If this card is Special Summoned from the hand: Inflict 800 damage to your opponent. At the end of the Damage Step, if this card battled: You can target up to 2 “Vijam the Cubic Seed” in your Graveyard; send this card to the Graveyard, and if you do, Special Summon them, then you can add 1 “Vulcan Dragni the Cubic King” from your Deck to your hand.