Sharuum the Hegemon [Double Masters]Set: Double Masters Type: Legendary Artifact Creature Sphinx Rarity: Rare Cost: {3}{W}{U}{B} Flying When Sharuum the Hegemon enters the battlefield, you may return target artifact card from your graveyard to the battlefield. To gain audience with the hegemon, one must bring a riddle she has not heard.

Set: Diamond & Pearl: Mysterious Treasures Type: Metal Rarity: Rare Retreat cost: Colorless

Set: Commander 2016 Type: Artifact Creature — Phyrexian Avatar Rarity: Mythic Cost: {6} Trample

it gets +3/+3 until end of turn for each creature blocking it beyond the first

Set: Neo Genesis Unlimited Type: Trainer Rarity: Common

Set: Modern Masters 2017 Type: Instant Rarity: Rare Cost: {1}{U} Return target nonland permanent you don't control to its owner's hand

"The best way to teach is by example

You may put any number of artifact cards with mana value X or less from among them onto the battlefield

Set: War of the Spark Type: Legendary Planeswalker — Tibalt Rarity: Uncommon Cost: {2}{R} Your opponents can't gain life

Set: Dragons of Tarkir Type: Instant Rarity: Rare Cost: {3}{G} Look at the top six cards of your library

Dungrove Elder's power and toughness are each equal to the number of Forests you control

Set: Commander 2018 Type: Sorcery Rarity: Rare Cost: {4}{W}{W} When you cast this spell

Set: Fifth Dawn Type: Creature — Giant Rarity: Rare Cost: {5}{R}{R} When Magma Giant enters the battlefield