Kefka, Court Mage

Whenever Kefka enters or attacks, each player discards a card. Then you draw a card for each card type among cards discarded this way.
{8}: Each opponent sacrifices a permanent of their choice. Transform Kefka. Activate only as a sorcery.

Kefka, Ruler of Ruin

Flying
Whenever an opponent loses life during your turn, you draw that many cards.

Kefka, Court Mage / Kefka, Ruler of Ruin

Final Fantasy

"Life... Dreams... Hope... Where do they come from? And where do they go? Such meaningless things... I'll destroy them all!"