Core Set 2020

Barkhide Troll | Creature | Troll | Barkhide Troll enters the battlefield with a +1/+1 counter on it. {1}, Remove a +1/+1 counter from Barkhide Troll: Barkhide Troll gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.) | Grzegorz Rutkowski

Greenwood Sentinel | Creature | Elf Scout | Vigilance (Attacking doesn't cause this creature to tap.) | Johann Bodin

Leafkin Druid | Creature | Elemental Druid | {T}: Add {G}. If you control four or more creatures, add {G}{G} instead. | Filip Burburan

Voracious Hydra | Creature | Hydra | Trample Voracious Hydra enters the battlefield with X +1/+1 counters on it. When Voracious Hydra enters the battlefield, choose one — • Double the number of +1/+1 counters on Voracious Hydra. • Voracious Hydra fights target creature you don't control. | Wayne Reynolds

Woodland Champion | Creature | Elf Scout | Whenever one or more tokens enter the battlefield under your control, put that many +1/+1 counters on Woodland Champion. | Randy Vargas

Creeping Trailblazer | Creature | Elemental | Other Elementals you control get +1/+0. {2}{R}{G}: Creeping Trailblazer gets +1/+1 until end of turn for each Elemental you control. | Johan Grenier