Harmonize

T: Add CC.

Destroy target creature.

Hexproof (This creature can't be the target of spells or abilities your opponents control.) This creature can't be blocked.

This land enters tapped. T: Add G or W.

Hexproof Whenever a creature card is put into an opponent's graveyard from anywhere, you may have Lazav become a copy of that card, except its name is Lazav, Dimir Mastermind, it's legendary in addition to its other types, and it has hexproof and this ability.

This land enters tapped. T: Add U or B.

Whenever you attack with two or more creatures, draw a card.

If you would draw a card, you may instead choose land or nonland and reveal cards from the top of your library until you reveal a card of the chosen kind. Put that card into your hand and put all other cards revealed this way on the bottom of your library in any order.