Teferi, Time Raveler [War of the Spark Prerelease Promos] Spike −9: Search your library for

−9: Search your library for any number of Dragon creature cards

Set: Planar Chaos Type: Instant Rarity: Rare Cost: {1}{B} Change the target of target spell with a single target

Set: Legends Type: Creature — Wall Rarity: Rare Cost: {3}{R}{R} Defender (This creature can't attack

Set: Portal Type: Sorcery Rarity: Rare Cost: {R} Each player shuffles the cards from their hand into their library

It's now apparent that he intends to use the device to hamper the 'mages' among the ranks of the renegades

Teferi, Time Raveler [War of the Spark Prerelease Promos] Spike −9: Search your library forSet: War of the Spark Prerelease Promos Type: Legendary Planeswalker Teferi Rarity: Rare Cost: {1}{W}{U} Each opponent can cast spells only any time they could cast a sorcery. +1: Until your next turn, you may cast sorcery spells as though they had flash. 3: Return up to one target artifact, creature, or enchantment to its owner's hand. Draw a card.