Kerberos

Kerberos enters the battlefield with six +1/+1 counters on it.
{b}{g}: Remove a +1/+1 counter and create a 2/1
green Fungari creature token with haste.
{b}{g}: Add a +1/+1 counter to Kerberos.
The castle continued to rise as Amnon watched a
three-headed, literal half mountain-sized Fungari
climb out from the earth carrying the castle
on its back.