Kediss, Emberclaw Familiar is a rare Legendary Creature — Elemental Lizard card from Secret Lair Drop (SLD), collector number 2364. Current market price: $11.84 (foil $14.66), TCGplayer market prices via Scryfall.
Whenever a commander you control deals combat damage to an opponent, it deals that much damage to each other opponent. Partner (You can have two commanders if both have partner.)