Hero card

Flickering Hound

Creature - Dog

PayoffThe more of what it needs is on the battlefield, the stronger it gets: the deck has to feed it a lot

Needs: Valiant

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

Build a deck with Flickering Hound as the hero

Makes it work

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

Use instead if you don't have it

Unsettling Twins · Crusader of Odric · Battle-Rattle Shaman · Hundred-Battle Veteran · Esgaroth Garrison · Turncoat Kunoichi

Cards in the meta that answer it

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