Ka'thyr, Lord of Anarchy

This spell cannot be countered.
Ka'thyr cannot be targeted by any player controlled spell.
Ka'thyr is Uncontrollable (no player controls this creature)
At the beginning of each players combat phase, Ka'thyr attacks a player at random.
If Ka'thyr deals combat damage to a player, place a +1/+1 counter on him.
Prevent damage to Ka'thyr equal to the number of +1/+1 counters on him