(Budget!) Collossus BURRRRRNNNN (non-meme)
Budget red burn deck, which uses a BIG BAD COLLOSUS as an alternate win condition.
Play this as recklessly as you can. The cost reduction from collossus applies even on your oponent's turn, so it's not as slow as it might look like.
Hint: do not place the middle mountain unless you're going to play the collossus on the following or current turn, that gives less time for your oponents to think "ranged creature! I must block it's shots!"
Seriously, I'm so happy with this list, lol
If you wish to add an extra collosus, I'd remove a single gift of steel.
Interesting choices include:
Lord of Terror
Garudan, Heart of the Mountain