Crackling Doom is nice, but it shouldn't make you a target as it's not a menace by itself, but include for sure.
End Hostilities
3WW
Sorcery
Destroy all creatures and all permanents attached to creatures.
New Wrath, but at this point I think there are plenty better than this, good if you need another one.
Thousand Winds
4UU
Creature - Elemental
Flying
Morph 5UU
When Thousand Winds is turned face up, return all other tapped creatures to their owners' hands.
I feel this is actually ok. It sucks that creatures have to be tapped, but I put this around the same power level as Hoverguard Sweepers. Morph makes it usuable.
See the Unwritten
4GG
Sorcery
Reveal the top eight cards of your library. You may put a creature card from among them onto the battlefield. Put the rest into your graveyard.
Ferocious — If you control a creature with power 4 or greater, you may put two creature cards onto the battlefield instead of one.
8 cards is plenty to get a creature, and the Ferocious shouldn't be too hard to achieve either. Not awesomely broken, but decent.
Utter End
2WB
Instant
Exile target nonland permanent.
Yummy in my tummy, auto-include in all stacks.