Magus of the Abyss [Future Sight] Aura Curse Set: Portal Three Kingdoms Type:

Set: Portal Three Kingdoms Type: Legendary Creature — Human Soldier Rarity: Rare Cost: {2}{U}{U} Horsemanship (This creature can't be blocked except by creatures with horsemanship

Set: Mirrodin Type: Creature — Human Warrior Rarity: Rare Cost: {4}{R} Haste

"The trick is

you can't lose the game and your opponents can't win the game

While it's phased out

Magus of the Abyss [Future Sight] Aura Curse Set: Portal Three Kingdoms Type:Set: Future Sight Type: Creature Human Wizard Rarity: Rare Cost: {3}{B} At the beginning of each player's upkeep, destroy target nonartifact creature that player controls of their choice. It can't be regenerated. He climbs a staircase of falling souls, fighting the continuous pull of the void.