Obelisk of Undoing [Antiquities]

Obelisk of Undoing [Antiquities]Set: Antiquities Type: Artifact Rarity: Rare Cost: {1} {6}, {T}: Return target permanent you both own and control to your hand. The Battle of Tomakul taught Urza not to rely on fickle reinforcements.

(This effect lasts indefinitely

Slayer of Eldrazi

Set: Commander 2016 Type: Artifact Creature — Minotaur Wizard Rarity: Rare Cost: {4}{U}{R} {1}{U}{R}: Return Etherium-Horn Sorcerer to its owner's hand

Set: Legends Type: Artifact Rarity: Rare Cost: {6} At the beginning of your upkeep

Set: Mirage Type: Creature — Human Assassin Rarity: Rare Cost: {3}{B} {B}

Set: Commander Anthology Volume II Type: Artifact Creature — Bird Rarity: Rare Cost: {3} Flying

The owls learn of mana from the mages who know it best

Set: Oath of the Gatewatch Type: Creature — Human Soldier Ally Rarity: Common Cost: {2}{W} Vigilance

Set: Rivals of Ixalan Type: Legendary Creature — Elder Dinosaur Rarity: Rare Cost: {10}{G}{G} This spell costs {X} less to cast

"Have you ever held a Boros signet

Set: Magic 2011 Type: Basic Land — Mountain Rarity: Common ({T}: Add {R}

and even the powerful magic of Planeswalkers