Dr. Rodney McKay's toughness is equal to 1 plus the number of nontoken artifacts you control.

When Dr. Rodney McKay or an artifact with mana value 5 or greater enters the battlefield under your control, draw a card.

Compare Intellect — {U}{B}: Dr. Rodney McKay deals X damage to target opponent, where X is the number of cards in your hand minus the number of cards in that opponent's hand.