The Obliterator is a nightmare to deal with, forcing your opponents to sacrifice tons of permanents or take a good chunk of damage
Monk of the Open Hand Monk of the Open Hand is an Uncommon White 1/1 creature that gains a +1/+1 counter whenever you cast a second spell each turn
Sejiri Shelter is another flexible card that provides protection from removal
Credit: Wizards of the Coast Sita Varma, Masked Racer Marcy: As far as exhaust abilities are concerned, I suppose this one is very much the 'Hail Mary' of them that we've seen so far: you aren't going to use this for very little reason, but there are some ways you could potentially use this to prevent your creatures from dying to damage, or also to avoid getting blown out in a bad attack/defense
Other Series Rarely, the Pokemon Trading Card Game will release special promotional cards to drum up hype for various promotions
On the other hand, you can make this work for you pretty well in the right deck, and its a reasonable ramp engine for red decks