Padeem, Consul of Innovation is a rare Legendary Creature — Vedalken Artificer card from The Brothers' War Commander (BRC), collector number 91. Current market price: $1.98, TCGplayer market prices via Scryfall.
Artifacts you control have hexproof. (They can't be the targets of spells or abilities your opponents control.) At the beginning of your upkeep, if you control the artifact with the greatest mana value or tied for the greatest mana value, draw a card.