Megamorph [MRL-061] Ultra Rare 135 Whenever a Human deals damage

Whenever a Human deals damage to you

Or these vials of invisible potion

Set: Rise of the Eldrazi Promos Type: Creature — Angel Rarity: Rare Cost: {4}{W}{W} Flying

Set: Odyssey Promos Type: Creature — Basilisk Rarity: Rare Cost: {4}{G}{G}{G} Whenever Stone-Tongue Basilisk deals combat damage to a creature

Set: XY: BREAKthrough Type: Darkness Rarity: Ultra Rare Retreat cost: 0

Megamorph [MRL-061] Ultra Rare 135 Whenever a Human deals damageSet: Magic Ruler Card type: Equip Spell Rarity: Ultra Rare If your Life Points are lower than your opponent''s, the original ATK of a monster equipped with this card is doubled. If your Life Points are higher, the original ATK is halved.