Rage Unbound

Whenever Rage Unbound enters the battlefield,
put a +1/+1 counter on enchanted creature.
Enchanted creature has trample and attacks each combat if able. Whenever enchanted creature
deals combat damage to a player, put a +1/+1
counter on it.
Enchanted creature has rage. (When this creature
dies, it deals damage equal to the number of +1/+1 counters on it to any target.)