Black has two solid picks in Theros: Beyond Death Limited with Drag to the Underworld and Final Death.
Drag to the Underworld isn’t as good as Murder or Cast Down, but it’ll hold up in Theros: Beyond Death (THB) Limited. It’s a four-mana card creature removal card that uses the mechanic Devotion to reduce its casting cost.
Cast Down is turn-two playable but Drag to the Underworld isn’t. And Murderous Rider takes out a planeswalker or creature. Drag to the Underworld most likely won’t see a ton of play in Standard Constructed or other Magic formats. But in Limited Draft, it’s a solid Aggro removal spell on turn three.
The only downfall to Drag to the Underworld is that THB is heavily focused on graveyard shenanigans. An opponent might not mind having a small Aggro creature removed from the battlefield when it can be used as fuel for a card with the Escape mechanic later in a match.
But even in a set like THB, a two cost removal spell is still a solid pick in Limited. And if a player is looking to exile a creature instead, there’s the THB spoiler Final Death that’s also in Black.
Final Death has a much larger casting cost, five mana (one Black), but it exiles a target creature and it’s a Common in rarity. Both of these removal cards are available to play digitally in MTG Arena on Jan. 16 and in the THB prerelease on Jan. 17 to 19.