Glen Elendra Archmage [Secret Lair Drop Series] 140 it gains ATK equal to

it gains ATK equal to the total ATK of all "Blackwing" monsters currently on the field

Set: Galactic Overlord Card type: Xyz/Effect Monster Rarity: Ultimate Rare Attack: 800 Defense: 800 Once per turn: You can detach 1 Xyz Material from this card to target 1 monster your opponent controls or in their Graveyard

If this card is Normal or Special Summoned: You can target 1 "Hydrogeddon"

Set: Beta Edition Type: Creature — Goblin Rarity: Common Cost: {R} The intricate dynamics of Rundvelt Goblin affairs are often confused with anarchy

At the beginning of the end step

Glen Elendra Archmage [Secret Lair Drop Series] 140 it gains ATK equal toSet: Secret Lair Drop Series Type: Creature Faerie Wizard Rarity: Rare Cost: {3}{U} Flying {U}, Sacrifice Glen Elendra Archmage: Counter target noncreature spell. Persist (When this creature dies, if it had no 1 1 counters on it, return it to the battlefield under its owner's control with a 1 1 counter on it.)