Esther, Ornate Warlord

When Esther, Ornate Warlord enters the battlefield, choose artifact, creature or land.
Then choose a converted mana cost. Search each opponents library for all cards of the chosen permanent type with the chosen converted
mana cost. Exile those cards. Then,
for each player, chose one of the cards exiled
this way. You may put that card onto the battlefield under your control. Shuffle the
remaining cards exiled with Esther, Ornate
Warlord back into their owner's library.