royal blood one piece booster box TCG: Korean (OP-10) 6 Leader cards BANDAI OP-10 One Piece Card

Shuffle two together and play

Play Other Cards for Free and Cost Reducers Two more related categories that are not included here are cards that play other cards for free, cheat things into play, and cost reducers, some of which can combine to make cards free, but that's not the focus here

This is great for Voltron strategies, but also all sorts of commanders from noncombat strategies who might still care about their commander's total power.

While there are a few cards like this, Gemstone Caverns is the only land that has this trait, and is one of the ways that players can win on the very first turn of the game under admittedly very specific circumstances

COWER in fear at the unspeakable terror of Blasphemous Act

If you consider that Vindicate targets creatures and planeswalkers at least 80% of the time you are onto a winner with a card that costs a third less while only lose a fifth of its functionality