Treeborn Frog [DR04-EN145] Ultra Rare 036 During damage calculation

During damage calculation

you can send 1 Gemini monster from your hand to the Graveyard to select and destroy 1 Spell or Trap Card your opponent controls

this card gains ATK equal to the destroyed monster's original ATK until the end of this turn

depending on whose turn it is

you can remove from play 1 DARK monster from your Graveyard to Special Summon 1 DARK monster from your Graveyard

Treeborn Frog [DR04-EN145] Ultra Rare 036 During damage calculationSet: Dark Revelation Volume 4 Card type: Effect Monster Rarity: Ultra Rare Attack: 100 Defense: 100 Effect: If this card is in your Graveyard during your Standby Phase and there are no Spell or Trap Cards on your side of the field, you can Special Summon this card to your side of the field. This effect cannot be activated if there is a face up Treeborn Frog on your side of the field.