Whenever Ludevic, Necrogenius enters the battlefield or attacks, mill a card.
, Exile X creature cards from your graveyard: Transform Ludevic, Necrogenius. X can't be zero. Activate only as a sorcery.
//
As this permanent transforms into Olag, Ludevic's Hubris, it becomes a copy of one of the exiled cards, except it's name is still "Olag, Ludevic's Hubris", it has base power and toughness 4/4, and it's a black and blue Legendary Zombie in addition to its other colors and types. Put a +1/+1 counter on it for each card exiled this way.
4/4
Locations
