If they're twice as thick as a regular card, it would pretty much be a nonstarter if you planned to mix them with your other cards (like lands)
When a creature with Quietus Spike deals combat damage to a player, that player loses half their life, rounded up
Flamecache Gecko feels like it fits a Rakdos sacrifice deck in other formats, as well
Thankfully, red has access to all kinds of noncreature token generators like Dragon Fodder, Goblin Assault, Goblin War Party, and more
Sacrifice after III.) I Create two 1/1 white Human Soldier creature tokens
Here are the cards from M13 I am looking forward to testing for Pauper Cube: Attended Knight: Three power for three mana with a relevant combat ability