white digimon cards Card Game Logo Decal all of your Digimon with [Sistermon] in their names gain [Blocker] Monochromon - Digimon LIBERATOR -

The fact you get to draw on EtB and on attack (without doing damage!) makes this an auto-include for any deck in blue that has a creature theme

C Common Hecatrice X LIGHT Level 4 [ FairyEffect ] ATK 1500 DEF 1100 You can discard this card to the GY

To double a creature's power, that creature gets +X/+0, where X is that creature's power as Double Trouble resolves

WHAT YOU NEED - Two Mythical Beast Cerberus (can work with just one) Obtained through Card Trader

But if you also want Gold DON cards to personalize your decks DON pile, a box gives you parallel DON cards (roughly 1 per box) plus a chance at the Gold variants