Hero card

Mischievous Pup

Creature – Dog

Value on arrivalDoes its thing as it enters: worth it from the first moment

Needs: Valiant

Gives: ETB

Not in winning lists yet: read from the card text and the graph

Build a deck with Mischievous Pup as the hero

Makes it work

Mouse Trapper · Whiskervale Forerunner · Nettle Guard · Veteran Guardmouse · Flowerfoot Swordmaster · Seedglaive Mentor · Emberheart Challenger · Whiskerquill Scribe

Benefits from it

Y'shtola Rhul · Splash Portal · Go Ninja Go · Personify

Use instead if you don't have it

Tishana's Tidebinder · Ambush Wolf · Mouse Trapper · Songcrafter Mage · Anafenza, Unyielding Lineage · Valley Floodcaller

Cards in the meta that answer it

Burst Lightning (Izzet Elemental) · Countersculpt (Azorius Control) · Get Lost (Azorius Control) · Jeskai Revelation (4-Color Control)