Blood Mefist [YCSW-EN004] Super Rare Champion Pack 8 when a card or effect

when a card or effect is activated that would destroy a card(s) on the field: You can Tribute this card

This can only be Special Summoned by Tributing "Sanha of the Thunder"

increase the ATK of this card by 500 points

except for its own effects

Blood Mefist [YCSW-EN004] Super Rare Champion Pack 8 when a card or effectSet: Yu Gi Oh! Championship Series Prize Cards Card type: Synchro Effect Monster Rarity: Super Rare Attack: 2800 Defense: 1300 1 Tuner + 1 or more non Tuner monsters Once per turn, during your opponent's Standby Phase: You can inflict 300 damage to your opponent for each card your opponent controls. Each time your opponent Sets a Spell or Trap Card(s): Inflict 300 damage to your opponent.