2 cards where the name includes “chromium”

Chromium {2}{W}{W}{U}{U}{B}{B}

Legendary Creature — Elder Dragon

Flying

Rampage 2 (Whenever this creature becomes blocked, it gets +2/+2 until end of turn for each creature blocking it beyond the first.)

At the beginning of your upkeep, sacrifice Chromium unless you pay {W}{U}{B}.

7/7

Illustrated by Edward P. Beard, Jr.

Standard
Alchemy
Pioneer
Explorer
Modern
Brawl
Legacy
Historic
Vintage
Pauper
Commander
Penny

Chromium, the Mutable {4}{W}{U}{B}

Legendary Creature — Elder Dragon

Flash

This spell can’t be countered.

Flying

Discard a card: Until end of turn, Chromium, the Mutable becomes a Human with base power and toughness 1/1, loses all abilities, and gains hexproof. It can’t be blocked this turn.

7/7

Illustrated by Chase Stone

Standard
Alchemy
Pioneer
Explorer
Modern
Brawl
Legacy
Historic
Vintage
Pauper
Commander
Penny

Though this query has ended, its relics still slumber in New Argive.