one piece card sleeves mtg Official 11 Kuzan 70 pieces of sleeves for each design. One Piece Official Sleeves Vol.4

Since many Hydras also generate +1/+1 counters, it couldnt hurt to also work some +1/+1 counter synergies into the deck like Hardened Scales and Conclave Mentor

Collector Boosters were introduced in Ravnica Allegiance and made a regular part of sets from Throne of Eldraine onwards

Granted, you have to attack them with Xyris in order for them to receive this benefit, but three life isn't a high cost for three cards

This Azorius spirit is exactly the kind of card you want on the board in a flicker deck

Although it can only be activated at sorcery speed, hence its inclusion here as a shout out, rather than a proper spot

This works best with some way to ditch the cat token, perhaps a Skullclamp or Goblin Bombardment, but its just a filthy card either way