Senbon Dokkan

[Main] Reveal the top 3 cards of your deck. You may play any number of Digimon cards with [Mamemon] in their names whose play costs add up to 15 or less among them without paying their memory costs. Delete 1 of your opponent's Digimon with a memory cost of 6 or less for each Digimon played with this effect. Trash the remaining cards.