mtg tidus card Tidus, Yuna's Guardian Stock image Tidus, Yuna's Guardian - Full

The Destined Warrior would lock you into white-blue-black, and while there arent many Final Fantasy Rogues in Magic , there are some very strong Clerics, quite a few Wizards, and a LOT of Warriors to consider

I dont expect any of these to matter in competitive Constructed formats, so they really come down to how useful they are in Draft, Sealed, and EDH

The Ruinous Powers (Black/Red/Blue) The Ruinous Powers deck in Magic: The Gathering stars Abbadon the Despoiler , and Belakor, the Dark Master

Treasure Cruise + Dig Through Time Any mechanic that lets you pay mana costs with a resource other than mana is at least a little broken