Tiger Grass

{t} Summon a 3/3 Grass Tiger token creature.
Gain a counter.
At the beginning of your upkeep, if
you control a Grass Tiger, tap tiger grass.
{t}, spend three counters: Grass Tigers spawn with one +1/+1
counter on them
Whenever a Grass Tiger dies, tap Tiger Grass,
and it does not untap at the beginning of your next upkeep.