Do you feed the fish? is a question as old as Commander, and because of this infamy, many times the Mystic Remora player will sit back and watch as nothing happens for several turns until, eventually, the cumulative upkeep cost becomes too exhaustive, the Mystic Remora is sacrificed, and suddenly the game begins in earnest
Incubate is on a few Phyrexian cards, like Bloated Processor
Creature - Human Knight Color tag templates(None) Midnight Reaper Whenever a nontoken creature you control dies, this creature deals 1 damage to you and you draw a card
To shore up matchups against Izzet Prowess and Azorius Omniscience, nearly every version includes three or four main-deck copies of High Noon
Anybody running a dog tribal deck in Commander is probably willing to pay top price for some ramp, especially where that ability is most likely to go off