Lumberknot

Shroud (This creature can't be the target of spells or abilities.)

Whenever another creature dies, you may put a +1/+1 counter on this creature.

Whenever this creature is dealt damage, put a +1/+1 counter on it.

Whenever this creature attacks, put a +1/+1 counter on each attacking creature.

Whenever you draw a card, put a +1/+1 counter on this creature.

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

When this creature enters, put a +1/+1 counter on target Merfolk you control.

Echo (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.