Endless Reinforcements

Put three +1/+1 counters on target creature.
Reinforce 1 — {g}
When a +1/+1 counter is put on a creature as a
result of Endless Reinforcements' reinforce
ability, put an enforce counter on that creature.
Whenever a creature with an enforce counter on
it dies, you may pay {1}, if you do, return Endless Reinforcements from your graveyard to your hand.