Wall of Roots

When this creature enters, search your library for a Forest card, put that card onto the battlefield, then shuffle.

When this creature enters, you may return target card from your graveyard to your hand.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.) When this creature enters, destroy target artifact, enchantment, or land.

Whenever you gain life, target opponent loses that much life. 3BB: Creatures you control gain lifelink until end of turn.

Flying U, Sacrifice this creature: Counter target noncreature spell. Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Flying Whenever you draw a card, Niv-Mizzet deals 1 damage to any target. T: Draw a card.

T: Add CC. Activate only if you control five or more lands.

As an additional cost to cast this spell, sacrifice an artifact or creature. Draw two cards and create a Treasure token. (It's an artifact with "T, Sacrifice this token: Add one mana of any color.")