Kujar Seedsculptor | Creature | Elf Druid | When Kujar Seedsculptor enters the battlefield, put a +1/+1 counter on target creature you control. | Anna Steinbauer
Longtusk Cub | Creature | Cat | Whenever Longtusk Cub deals combat damage to a player, you get {E}{E} (two energy counters).
Pay {E}{E}: Put a +1/+1 counter on Longtusk Cub. | Zoltan Boros
Sage of Shaila's Claim | Creature | Elf Druid | When Sage of Shaila's Claim enters the battlefield, you get {E}{E}{E} (three energy counters). | Howard Lyon
Servant of the Conduit | Creature | Elf Druid | When Servant of the Conduit enters the battlefield, you get {E}{E} (two energy counters).
{T}, Pay {E}: Add one mana of any color. | Magali Villeneuve
Voltaic Brawler | Creature | Human Warrior | When Voltaic Brawler enters the battlefield, you get {E}{E} (two energy counters).
Whenever Voltaic Brawler attacks, you may pay {E}. If you do, it gets +1/+1 and gains trample until end of turn. | Raymond Swanland
Narnam Cobra | Artifact Creature | Snake | {G}: Narnam Cobra gains deathtouch until end of turn. (Any amount of damage it deals to a creature is enough to destroy it.) | Christopher Burdett