Rotten reunion could be Agony warp x2
Annul could be Steel sabotage

---Sideboard---
vs UB Terror
+ Chainer's Edict x2
+ Nihil Spellbomb x2
+ Dispel x1
- Snuff Out x4
- Unexpected Fangs x1

vs Affinity
+ Annul x4
+ Nihil Spellbomb x2
+ Dispel x1
- Spell Pierce x2
- Unexpected Fangs x2
- Deep Analysis x3

vs Kuldotha
+ Blue Elemental Blast x4
+ Nausea x2
- Deep Analysis x3
- Snuff Out x3

vs Gates
+ Nausea x2
+ Nihil Spellbomb x2
+ Annul x4
+ Dispel x1
- Spell Pierce x2
- Deep Analysis x3
- Unexpected Fangs x2
- Cast Down x2

vs Fae
+ Nausea x2
+ Dispel x1
- Unexpected Fangs x1
- Deep Analysis x2 (mono U, UR) Snuff Out x2 (UB)