For example, an aura-based EDH deck would run Winds of Rath to destroy everything but their creatures, allowing them to leverage the board wipes as a catch-up mechanism and finisher
2x2, 2x3, 2x4, 3x3, 3x4, 3x10, etc
W for a 1/1 (So far, so good.) 2W for a 2/2 (Pearled Unicorn, but not horrible.) 10W for a 5/5 first strike creature (Wait, what?) 1U for a 0/3 (Eh, but bearable.) 3U for a 0/6 (Getting pretty bad here.) 11U for a 6/6 islandwalk creature (Wait, what?) B for a 1/1 (Muck Rats, but okay.) 4B for a 3/3 (Looking a little worse here.) 12B for a 5/5 creature with pseudo-fear (Wait, what?) Those ultimate mana costs were paid out over multiple turns, but if your creature died before hitting their highest level game over, tons of wasted mana, yikes
Smee - Bumbling Mate who needs a Pirate Captain present on the board to prevent Smees self-inflicting damage
This card was spoiled later in the Livestream and appears in the Commander section of this article
Slickshot Show-Off is a multi-format staple