Effect
Once per turn, during either player's Main Phase: You can target 1 face-up monster on the field; switch its current ATK and DEF until the end of this turn.
The monster effect of "Performapal Whip Viper" is a Quick Effect that can only be activated during either player's Main Phase. (This effect targets 1 face-up monster on the field.)
If the ATK or DEF has been changed by the effect of an Equip Spell Card or similar, the values in their changed state are swapped until the end of the turn.
If "Performapal Whip Viper" has activated its effect during Main Phase 1, it cannot activate its effect again during Main Phase 2 of that same turn.
Continue with related public research
From this rulings page you can jump back into card data, set archives, tournament decks, banlist checks, and market movers.
Card database
Search Yu-Gi-Oh! cards, archetypes, stats, and printings.
Set archive
Navigate booster sets and inspect all cards in each release.
Tournament decks
Browse competitive decklists, player finishes, and archetype trends.
Banlist status
Check the current status of Yu-Gi-Oh! cards on the banlist.
Market movers
Track the top Yu-Gi-Oh! price gainers and momentum cards.