President Ojama

Eminence: All creatures everywhere (in any
zone), have their base Attack and health
swapped.If you control a creature with the
greatest power (which would be health but
reversed) among creatures on the battlefield,
you cannot lose the game and opponents cannot
win the game.
{t}Tap, Sacrifice a creature: Search your library
for any number of creatures with combined
CMC equal to or less than the sacrificed
creature’s power.