Rainbow Dragon [TAEV-EN006] Secret Rare SWSH020 then if its ATK has

then if its ATK has been reduced to 0 as a result

−2: Put a +1/+1 counter on each creature you control and a loyalty counter on each other planeswalker you control

you divide that creature's combat damage

You can destroy all Field Spell Cards on the field

For example

Rainbow Dragon [TAEV-EN006] Secret Rare SWSH020 then if its ATK hasSet: Tactical Evolution Card type: Effect Monster Rarity: Secret Rare Attack: 4000 Defense: 0 This card cannot be Normal Summoned or Set. This card cannot be Special Summoned, except from your hand while you have 7 "Crystal Beast" cards with different names on the field or in your Graveyard. This card cannot activate its effects the turn it Special Summoned. Send all "Crystal Beast" monsters you control to the Graveyard; This cards gains 1000ATK for