primordial ooze attacks each turn if able.
at the beginning of your upkeep, put a +1/+1 counter on primordial ooze. then you may pay x, where x is the number of +1/+1 counters on it. if you don't, tap primordial ooze and it deals x damage to you.
The thick, moving mass from the beginning of evolution swallows and digests the animate and inanimate as it unthinkingly strives to continue its existence.
