The Iron Throne

{1}{w}: Create a 1/1 white Guard token
Creatures you control have double strike, lifelink,
and vigilance
At the beginning of your upkeep, proliferate
At the beginning of your end step, if you do not control the creature with the highest power, sacrifice The Iron Throne
The massive throne is said to be made of the swords of
Aegon's fallen enemies, melted together by the
dragonfire of Balerion.