Cicera, The Blood Red Rose

When Cicera, The Blood Red Rose enters the battlefield, exile each other creature with mana
value X or greater, X can't be zero.
When Cicera, The Blood Red Rose leaves the battlefield, return each creature exiled this way
to the battlefield. They get +X/+X and gain
haste, double strike, and trample, where X is the
number of creatures on the battlefield. Until the
end of your next turn, creatures your opponents
control must attack you.