Jakub, who stands alone

+2: You may sacrifice a land, if you do, you may draw 2 cards. If you control no creatures you gain 2 life.
-1: Until your next turn, Jakub becomes a 6/4 human Soldier creature with first strike and lifelink. Prevent all combat damage to him.
-4: Each player sacrifices enough creatures to equal the number of creatures controlled by the player who controls the fewest.