Green Creatures Diamond Weapon: Maybe it takes a little work to be able to cast this creature for a reasonable amount of mana - but I think youll be able to cast it on turn six without a lot of effort, and even sooner if you build a deck focused on self-mill
On the other hand, blue / white are two of the best blink / bounce colors and also offer some of the most powerful planeswalkers, but in the past, if you wanted to take advantage of these synergies, you'd have to go green to play Doubling Season
Callous BloodmageCallous Bloodmage can do the same, but can also create a blocker or exile a problematic graveyard
#19: Near-Death Experience A similar path to that traveled with Barren Glory exists here for Boros mages, incorporating Worldfire or Soulgorger Orgg to decimate yourself in the name of one big Near-Death Experience turn
How about having to discard your entire hand in addition to sacrificing it
The cards are not exactly powerful, they are painfully slow at dealing with anything with converted mana cost above zero and are only really effective if charged up preemptively