fungal behemoth's power and toughness are each equal to the number of +1/+1 counters on creatures you control.
suspend x—xgg. x can't be 0. (rather than cast this card from your hand, you may pay xgg and exile it with x time counters on it. at the beginning of your upkeep, remove a time counter. when the last is removed, cast it without paying its mana cost. it has haste.)
whenever a time counter is removed from fungal behemoth while it's exiled, you may put a +1/+1 counter on target creature.