Essence Catalyst

Changeling (This card is every creature type.)
Amplify X (As this creature enters the battlefield,
put X +1/+1 counters on it for each card you reveal
in your hand that shares a creature type with this
creature.)
When Essence Catalyst enters the battlefield, you
may put a creature card revealed by its amplify
ability with lesser power than Essence Catalyst
from your hand onto the battlefield.