Teyo, Geometric Tactician [Commander Masters] BT14-093 but I believe a more

but I believe a more mundane power source might suffice

the Broken Blade

−8: You get an emblem with "Artifacts

Set: XY: Black Star Promos Type: Fire Rarity: Promo Retreat cost: 3

Set: Neo Revelation 1st Edition Type: Psychic Rarity: Holo Rare Retreat cost: Colorless

Teyo, Geometric Tactician [Commander Masters] BT14-093 but I believe a moreSet: Commander Masters Type: Legendary Planeswalker Teyo Rarity: Rare Cost: {2}{W} When Teyo, Geometric Tactician enters the battlefield, create a 0 4 white Wall creature token with defender and flying. [+1]: You and target opponent each draw a card. [ 2]: Choose left or right. Until your next turn, each player may attack only the nearest opponent in the last chosen direction and planeswalkers controlled by that opponent.