fcbc card sleeves Trading Card Game Supplies –

Which is

2 Maxx Cs should be good: provides draw power, and, as you pointed out, discourages/punishes the opponent while doubling as fodder for Shekhinaga

Shadow of the Six Samurai - Shien X EARTH Rank 4 [ Warrior / XyzEffect ] ATK 2500 DEF 400 2 Level 4 "Six Samurai" monsters Once per turn (Quick Effect): You can detach 1 material from this card, then target 1 "Six Samurai" monster you control with less than 2000 ATK

For the same total converted mana cost, you can get a sick instant that brings the spirit of Searing Blaze to Green

They have a variety of basic effects, but have not been released in the physical card game, though they do appear in some video games