You'll never be able to gun down a whole table of players in multiplayer using something that triggers off the damage because the targeted player will just concede in response.
Momir Vig, Simic Visionary Melek, Izzet Paragon Oona, Queen of the Fae Bruna, Light of Alabaster Gisela, Blade of Goldnight Rhys the Redeemed Jarad, Golgari Lich Lord Sen Triplets The Mimeoplasm WUBRGSliver OverlordGRBUW WUBRGSliver Hivelord(Superfriends)GRBUW
Lol, that's a funny reservoir. 50 life is a tall order though (I mean, Felidar Sovereign only needs 40 to win you the game), but at least it has innate lifegain ability.
Wow, your playgroup sounds fun.
Reprint Stasis!
Control needs more love.
EDH:
WUBRGSliver OverlordGRBUW
WUBRGSliver Hivelord(Superfriends)GRBUW
UBDragonlord Silumgar WGKarametra, God of Harvests
BRUNekusar, the Mindrazer BGMazirek, Kraul Death Priest
URMelek, Izzet Paragon UGPrime Speaker Zegana
WUHanna, Ship's Navigator BWUSydri, Galvanic Genius
WUBRGSliver Queen RBBladewing the Risen
WBKarlov of the Ghost Council RGXenagos, God of Revels
GFreyalise, Llanowar's Fury RWAurelia, the Warleader
RIb Halfheart, Goblin Tactician BDrana, Liberator of Malakir
UAzami, Lady of Scrolls WNahiri, the Lithomancer
WBGDoran, the Siege Tower CEmrakul, the Promised End