Lazav, Sismic Mastermind

Hexproof
Whenever you draw a card, put two
Shapeshifting counter on Lazav, Sismic
Mastermind.
Remove X Shapeshifting counters, Lazav, Sismic
Mastermind becomes a copy of target creature
card in the battlefield with converted mana cost
X or less, except its name is Lazav, Sismic Mastermind, it's legendary in addition to its other types, and it has hexproof. Draw X cards.