Hunting Moa

Echo {2}{G} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When this creature enters or dies, put a +1/+1 counter on target creature.

Archenemy

Echo {2}{G} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When Hunting Moa enters the battlefield or is put into a graveyard from the battlefield, put a +1/+1 counter on target creature.

Time Spiral Timeshifted

Echo {2}{G} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
Whenever Hunting Moa comes into play or is put into a graveyard from play, put a +1/+1 counter on target creature.

Urza's Destiny

Echo
Whenever Hunting Moa comes into play or is put into a graveyard from play, put a +1/+1 counter on target creature.

You get a +1/+1 counter both when it enters and when it goes to a graveyard from the battlefield.