Elspeth, Night-Errant

+1: Put two 1/1 black zombie soldier creature tokens with deathtouch into play. Each opponent loses 1 life, and you gain 1 life. Draw a card.
-4: Each opponent loses life equal to the number of creatures in play divided by two rounded down and you gain life equal to half of this damage.
-10: For the rest of the game, artifacts, creatures, enchantments, and lands you control are indestructible and creatures you control have deathtouch.