Shock

Whenever a creature an opponent controls enters, you may have that player lose 1 life.

(T: Add B.)

At the beginning of each player's draw step, that player draws an additional card. Each player may play an additional land on each of their turns.

This land enters tapped unless you control a Forest or a Plains. T: Add G or W.

Bloodthirst 2 (If an opponent was dealt damage this turn, this creature enters with two +1/+1 counters on it.) Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Enchant creature Enchanted creature can't attack or block, and its activated abilities can't be activated. At the beginning of the end step, if enchanted creature's power is 4 or greater, destroy this Aura.

(T: Add R.)

+1: Create a 3/3 green Beast creature token. −3: Draw cards equal to the greatest power among creatures you control. −6: Create a 6/6 green Wurm creature token for each land you control.