mtg mirrodin besieged card Magnetic Mine [Mirrodin Besieged] that player discards a card and you untap all lands you control Magic the Gathering: Mirrodin Besieged

And for an instant win setup, pairing it with Wound Reflection means a player with 20+ life drops down to 10 and then immediately falls to 0 at end of turn a simple two-card combo that ends games fast and dramatically

Yuna, Grand Summoner Yuna, Grand Summoner is a powerful card

Dawnwing Marshal Rarity: Uncommon TYPE: Creature SUBTYPE: Cat Soldier CMC: 2 Mana cost: USD: $0.13 EUR: 0.16 TIX: 0.02 EDHREC RANK: 17237 (2/2) Flying : Creatures you control get +1/+1 until end of turn

As soon as you do so and either have an ascend card on the battlefield or resolve an ascend spell, you earn the city's blessing

Better than Jace, I guess