Swap Frog [OP03-EN001] Ultimate Rare Machine or leaves the field because

or leaves the field because of an opponent's card effect while its owner controls it: You can inflict 500 damage to your opponent for each "Frightfur" monster in your Graveyard

Set: Dark Beginning 1 Card type: Normal Spell Rarity: Super Rare Pay 1000 Life Points

then if this card was Set before activation and is on the field at resolution

Once per Chain

) Cannot be used as an Xyz Material for an Xyz Summon

Swap Frog [OP03-EN001] Ultimate Rare Machine or leaves the field becauseSet: OTS Tournament Pack 3 Card type: Effect Monster Rarity: Ultimate Rare Attack: 1000 Defense: 500 You can Special Summon this card (from your hand) by discarding 1 other WATER monster. When this card is Summoned: You can send 1 Level 2 or lower Aqua Type WATER monster from your Deck or face up from your field to the Graveyard. Once per turn: You can return 1 monster you control to the hand; you can Normal Summon 1 "Frog" monster during your Main