Almyra, High Sovereign

First Strike, Vigilance
Sovereign -- Other creatures you control get +2/+2 and haste. (All creatures with Sovereign in your deck must share a name.)
When Almyra, High Sovereign enters the battlefield, sacrifice the creature with the greatest power among creatures you control. Put X 1/1 white and red Soldier creature tokens onto the battlefield, where X is that creature's power.