Elemental Hero Gaia [DT06-EN034] Common Field Spell by Tributing 1 Thunder Effect

by Tributing 1 Thunder Effect non-Fusion Monster (in which case you do not use "Polymerization")

At the end of the Battle Phase

Set: Astral Pack 7 Card type: Fusion Monster Rarity: Common Attack: 2200 Defense: 1800 "Lord of the Lamp" + "Invader from Another Dimension"

negate the activation

Set: Duelist Alliance Card type: Counter Trap Rarity: Ultra Rare When a Spell/Trap Card

Elemental Hero Gaia [DT06-EN034] Common Field Spell by Tributing 1 Thunder EffectSet: Duel Terminal 6 Card type: Fusion Effect Monster Rarity: Common Attack: 2200 Defense: 2600 1 "Elemental HERO" monster + 1 EARTH monster Must be Fusion Summoned and cannot be Special Summoned by other ways. When this card is Fusion Summoned: Target 1 face up monster your opponent controls; until the End Phase, its ATK is halved and this card gains the same amount of ATK.