Wilds of Eldraine

Boundary Lands Ranger | Creature | Human Ranger | At the beginning of combat on your turn, if you control a creature with power 4 or greater, you may discard a card. If you do, draw a card. | Pascal Quidault

Tattered Ratter | Creature | Human Peasant | Whenever a Rat you control becomes blocked, it gets +2/+0 until end of turn. | Tyler Walpole

Picnic Ruiner | Creature | Goblin Rogue | Whenever Picnic Ruiner attacks while you control a creature with power 4 or greater, Picnic Ruiner gains double strike until end of turn. | Edgar Sánchez Hidalgo

Become Brutes | Sorcery | | One or two target creatures each gain haste until end of turn. For each of those creatures, create a Monster Role token attached to it. (If you control another Role on it, put that one into the graveyard. Enchanted creature gets +1/+1 and has trample.) | Julia Griffin

Ash, Party Crasher | Legendary Creature | Human Peasant | Haste Celebration — Whenever Ash, Party Crasher attacks, if two or more nonland permanents entered the battlefield under your control this turn, put a +1/+1 counter on Ash. | Jason Rainville

Ruby, Daring Tracker | Legendary Creature | Human Scout | Haste Whenever Ruby, Daring Tracker attacks while you control a creature with power 4 or greater, Ruby gets +2/+2 until end of turn. {T}: Add {R} or {G}. | Ekaterina Burmak