First printed in Strixhaven: School of Mages (2021)
Sorcery
This spell costs 
less to cast if you've cast another instant or sorcery spell this turn.
Target creature you control gets +1/+2 until end of turn. Then it fights target creature you don't control. (Each deals damage equal to its power to the other.)
"Remember the rules. No spells to the face!"
- Illustrated by
- Randy Vargas
Legality
- Legal in
- Pioneer, Modern, Legacy, Vintage, Pauper, Historic, Timeless, Gladiator, Commander, Duel Commander, Pauper Commander, Tiny Leaders, Oathbreaker, Brawl, Competitive Brawl
- Not legal in
- Standard, Future Standard, Alchemy, Penny Dreadful, Premodern, Old School 93/94, PreDH, Standard Brawl
Rulings (3)
- To determine the total cost of a spell, start with the mana cost or alternative cost you’re paying, add any cost increases, then apply any cost reductions (such as that of Mage Duel). Mage Duel’s mana value is always 3, no matter what the total cost to cast it was.
- If the creature you control is an illegal target as Mage Duel tries to resolve, that creature won’t get +1/+2. If that creature is a legal target, but the one you don’t control isn’t, your creature will still get +1/+2. In both cases, no fight will happen and no creature will deal or be dealt damage.
- You can’t cast Mage Duel unless you choose both a creature you control and a creature you don’t control as targets.
Prices
Paper price: €0.04 / $0.13 , the cheapest non-foil print (Cardmarket and TCGplayer through MTGJSON, 2 Nov 2026).
MTGO price: 0.002 TIX, the cheapest non-foil print (average sell price on GoatBots, 2 Nov 2026).