Arborback Stomper | Creature | Beast | Trample
When Arborback Stomper enters the battlefield, you gain 5 life. | Dan Scott
Cultivator of Blades | Creature | Elf Artificer | Fabricate 2 (When this creature enters the battlefield, put two +1/+1 counters on it or create two 1/1 colorless Servo artifact creature tokens.)
Whenever Cultivator of Blades attacks, you may have other attacking creatures get +X/+X until end of turn, where X is Cultivator of Blades's power. | Bastien L. Deharme
Nissa, Vital Force | Legendary Planeswalker | Nissa | +1: Untap target land you control. Until your next turn, it becomes a 5/5 Elemental creature with haste. It's still a land.
−3: Return target permanent card from your graveyard to your hand.
−6: You get an emblem with "Whenever a land enters the battlefield under your control, you may draw a card." | Clint Cearley
Riparian Tiger | Creature | Cat | Trample
When Riparian Tiger enters the battlefield, you get {E}{E} (two energy counters).
Whenever Riparian Tiger attacks, you may pay {E}{E}. If you do, it gets +2/+2 until end of turn. | Igor Kieryluk
Verdurous Gearhulk | Artifact Creature | Construct | Trample
When Verdurous Gearhulk enters the battlefield, distribute four +1/+1 counters among any number of target creatures you control. | Jaime Jones
Engineered Might | Sorcery | | Choose one —
• Target creature gets +5/+5 and gains trample until end of turn.
• Creatures you control get +2/+2 and gain vigilance until end of turn. | Lake Hurwitz