(At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay for each age counter on it.)
Mwonvuli Ooze's power and toughness are each equal to 1 plus twice the number of age counters on it.No reference price for this printing yet: not enough stores to make an average.
Run a comparison: we query the stores live, it may have arrived this morning.
Its power/toughness changes when the cumulative upkeep resolves, not when it triggers.
2004-10-04 · Wizards of the CoastIf you choose not to pay Mwonvuli Ooze’s cumulative upkeep, it will still get an age counter before being sacrificed. Its power and toughness will momentarily increase before being put into the graveyard, which might matter to certain other cards (such as Proper Burial).
2008-04-01 · Wizards of the Coast
The CG Realm · Condition HP
