Sheev Palpatine

Valki, God of Lies
When Sheev Palpatine enters the battlefield, each opponent
reveals their hand. For each opponent, exile a
creature card they revealed this way until Sheev
Palpatine leaves the battlefield.
{x}: Choose a creature card exiled with Sheev
Palpatine with converted mana cost {x}. Sheev
Palpatine becomes a copy of that card.