Hero card

Hemosymbic Mite

Creature - Mite

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 Hemosymbic Mite as the hero

Makes it work

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

Use instead if you don't have it

Seeker of Sunlight · Dryad Militant · Cenote Scout · Earthen Ally · Tarmogoyf · Bloom Tender

Cards in the meta that answer it

Requiting Hex (Dimir Aggro) · Burst Lightning (Izzet Elemental) · Countersculpt (Azorius Control) · Get Lost (Azorius Control)