Omen king Morgott

First strike, Shardbearer (If this creature is your commander, you may have a Great Rune as a second commander)
Whenever Morgott deals combat damage to a player, sacrifice up to that many Graces
Graces you control have: "When this permanent is sacrificed, you may pay {1}. If you do, exile a
permanent you control and immediately return it to
the battlefield
"Have it writ upon thy meagre grave: Felled by king Morgott! Last of all kings!"