Hostage Taker [Ixalan Prerelease Promos] SM228 you can treat it as

you can treat it as a non-Tuner

Goblin Glider can't block

Set: Commander 2016 Type: Sorcery Rarity: Rare Cost: {5}{U} Exile target instant or sorcery card from your graveyard and target instant or sorcery card from an opponent's graveyard

Set: XY: Phantom Forces Type: Fairy Rarity: Common Retreat cost: Colorless

but full-on assault hasn't failed them yet

Hostage Taker [Ixalan Prerelease Promos] SM228 you can treat it asSet: Ixalan Prerelease Promos Type: Creature Human Pirate Rarity: Rare Cost: {2}{U}{B} When Hostage Taker enters the battlefield, exile another target creature or artifact until Hostage Taker leaves the battlefield. You may cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any type to cast that spell.