Elemental Hero Prisma [DT03-EN007] Common Foil you may pay 4 life

you may pay 4 life rather than pay this spell's mana cost

Set: Battle of Omni Promos Card type: Digimon Rarity: Rare Digi type: Beastkin Play Cost: 4 Form: Rookie Attribute: Data Digivolve Cost: 0 Digivolve Cost Level: 2 [On Play] 1 of your opponent's Digimon gains [Security Attack -1] (This Digimon checks 1 fewer security cards) until the end of your opponent's next turn

For every blue Tamer you have in play

Multiple instances of cascade trigger separately

or Ebon Praetor

Elemental Hero Prisma [DT03-EN007] Common Foil you may pay 4 lifeSet: Duel Terminal 3 Card type: Effect Monster Rarity: Common Attack: 1700 Defense: 1100 Once per turn, you can activate this card's effect by revealing 1 Fusion Monster from your Extra Deck and sending 1 of the Fusion Material Monster listed on that card from your Main Deck to the Graveyard. Until the End Phase this card's name becomes the name of the monster you sent to the Graveyard.