Underworld Breach has powered some of the strongest combo turns in recent years, which is why it ended up banned in multiple formats
Your opponent may have that one card that destroys you or your one is prized and you lose the game because you are playing only one one
Its understandable, given just how hard it can be to really understand opportunity cost and to fully appreciate the selection Brainstorm gives us access to, but the technology of cost-efficient cards that shuffle pushed it over the edge
Legendary Creature - Human Samurai Color tag templates(None) Mardu Banner : Add , , or
You could win with Bontu's Monument or even make a tribal deck using Urza's Incubator
Sometimes if Yubel activates "Heavy Storm" while you control "Crystal Beast Cobalt Eagle", the latter is destroyed even though it is in the Monster Card Zone