I've toyed around with a grav/nrg build more so since reading a post about enflame+singy, and will vouch for the pairings effectiveness. I also have the want to swap-in teleport target, but have found I've been doing great without it.
I'm finding the quickest clear speed w/ my build w/o teleport target, is to buff singy with spirit ward, use wormhole to drop mobs on top of singy, apply enflame immediately after casting wormhole, then immobilize the teleported group. From here you can range attack any mobs not teleported by wormhole, luring them to singy, hide behind an object if available to quicken the pull, and lock them down with immobilize once they're within singy's gravitational field. From this point, since I'm not using teleport target, I will quickly run ahead and and draw the next group back to singy, who is working on the first spawn still. I will keep pulling mobs and locking them down with immobilize until I feel the distance of return is too far/takes too long, causing singy to follow.
Often enough, I'm able to total focus + power burst the boss dead while singy + enflame, and curshing field thrown in between attacks kills the rest. If multi bosses are grouped, Ill switch between them with single target attacks. Also, I'm use whirling hands as my only AoE attack, besides spamming the group immobilize, crushing field, while no bosses present. The double cast is effective in this build. Of course works with bosses, but then I find I'm left only killing a boss at the end of every pull much longer than preferred after all else have died.
Here is the build I'm currently working with, more expensive sets than you'd prefer, but if you can take anything from it, awesome. Or else, someone may tell me whats up; supplying you with more info ^.^
*SHARED WRONG BUILD - CORRECTED*
Villain Plan by Mids' Reborn : Hero Designer 2.6.0.7 https://github.com/ImaginaryDevelopment/imaginary-hero-designer
Click this DataLink to open the build!
Level 50 Magic Dominator Primary Power Set: Gravity Control Secondary Power Set: Energy Assault Power Pool: Speed Power Pool: Sorcery Power Pool: Leadership Power Pool: Fighting Ancillary Pool: Psionic Mastery
Villain Profile: Level 1: Lift -- Apc-Dam%(A), Apc-Dmg/Rchg(13), Apc-Acc/Dmg/Rchg(40), Apc-Acc/Rchg(43), Apc-Dmg/EndRdx(43) Level 1: Power Bolt -- Empty(A) Level 2: Gravity Distortion -- SprAscoft-Acc/Conf/Hold/Immob/Sleep/Stun/Fear(A), SprAscoft-Conf/Hold/Immob/Sleep/Stun/Fear/Rchg(3), SprAscoft-EndRdx/Rchg(3), SprAscoft-Acc/Conf/Hold/Immob/Sleep/Stun/Fear/EndRdx(5), SprAscoft-Acc/Conf/Hold/Immob/Sleep/Stun/Fear/EndRdx/Rchg(5), SprAscoft-Rchg/+Dmg%(9) Level 4: Super Speed -- Empty(A) Level 6: Hasten -- RechRdx-I(A), RechRdx-I(11) Level 8: Crushing Field -- SprDmnGrs-Acc/Conf/Hold/Immob/Sleep/Stun/Fear(A), SprDmnGrs-Acc/Conf/Hold/Immob/Sleep/Stun/Fear/EndRdx(11), SprDmnGrs-Conf/Hold/Immob/Sleep/Stun/Fear/Rchg(15), SprDmnGrs-Acc/Conf/Hold/Immob/Sleep/Stun/Fear/EndRdx/Rchg(15), SprDmnGrs-Rchg/Fiery Orb(17), SprDmnGrs-EndRdx/Rchg(37) Level 10: Mystic Flight -- WntGif-ResSlow(A) Level 12: Maneuvers -- LucoftheG-Def/Rchg+(A), Rct-ResDam%(34), ShlWal-ResDam/Re TP(45) Level 14: Tactics -- GssSynFr--Build%(A) Level 16: Power Up -- RechRdx-I(A), RechRdx-I(17) Level 18: Gravity Distortion Field -- Lck-Acc/Hold(A), Lck-Acc/Rchg(19), Lck-Rchg/Hold(19), Lck-EndRdx/Rchg/Hold(25), Lck-Acc/EndRdx/Rchg/Hold(33), Lck-%Hold(36) Level 20: Whirling Hands -- Arm-Dam%(A), Erd-%Dam(13), Arm-Dmg/EndRdx(21), Arm-Acc/Dmg/Rchg(21), Arm-Acc/Rchg(23), Arm-Dmg(23) Level 22: Spirit Ward -- Heal-I(A), EndRdx-I(25) Level 24: Rune of Protection -- GldArm-3defTpProc(A) Level 26: Wormhole -- AbsAmz-Stun(A), AbsAmz-Stun/Rchg(27), AbsAmz-Acc/Stun/Rchg(27), AbsAmz-Acc/Rchg(29), AbsAmz-EndRdx/Stun(29), SuddAcc--KB/+KD(46) Level 28: Total Focus -- Hct-Dam%(A), Hct-Dmg/Rchg(31), Hct-Dmg/EndRdx(31), Hct-Acc/Dmg/Rchg(31), Hct-Acc/Rchg(33), TchofDth-Dam%(40) Level 30: Enflame -- PstBls-Acc/Dmg(A), PstBls-Dmg/EndRdx(42), PstBls-Dmg/Rchg(42), PstBls-Dmg/Rng(46), PstBls-Acc/Dmg/EndRdx(48) Level 32: Singularity -- ExpRnf-+Res(Pets)(A), ExpRnf-Acc/Rchg(33), ExpRnf-Acc/Dmg/Rchg(34), ExpRnf-EndRdx/Dmg/Rchg(37), SuddAcc--KB/+KD(50) Level 35: Sniper Blast -- StnoftheM-Dam%(A), StnoftheM-Acc/Dmg(37), StnoftheM-Dmg/EndRdx(39), StnoftheM-Acc/ActRdx/Rng(39), StnoftheM-Dmg/ActRdx/Rchg(39), GldJvl-Dam%(50) Level 38: Power Burst -- SprWntBit-Rchg/SlowProc(A), SprWntBit-Acc/Dmg(40), SprWntBit-Dmg/Rchg(42), SprWntBit-Acc/Dmg/EndRdx(43), SprWntBit-Acc/Dmg/Rchg(45), GldJvl-Dam/End/Rech(45) Level 41: Link Minds -- LucoftheG-Def/Rchg+(A), LucoftheG-Def/Rchg(46), Rct-Def/Rchg(48), AdjTrg-ToHit/Rchg(50) Level 44: Kick -- Empty(A) Level 47: Tough -- UnbGrd-Max HP%(A), StdPrt-ResDam/Def+(34), UnbGrd-ResDam/EndRdx(48) Level 49: Weave -- LucoftheG-Def/Rchg+(A), LucoftheG-Def/EndRdx(36) Level 1: Brawl -- Empty(A) Level 1: Domination Level 1: Quick Form Level 1: Prestige Power Dash -- Empty(A) Level 1: Prestige Power Slide -- Empty(A) Level 1: Prestige Power Quick -- Empty(A) Level 1: Prestige Power Rush -- Empty(A) Level 1: Prestige Power Surge -- Empty(A) Level 1: Sprint -- Clr-Stlth(A) Level 2: Rest -- Empty(A) Level 4: Ninja Run Level 2: Swift -- Empty(A) Level 2: Health -- Pnc-Heal/+End(A), NmnCnv-Regen/Rcvry+(7), Mrc-Rcvry+(9) Level 2: Hurdle -- Empty(A) Level 2: Stamina -- PrfShf-End%(A), PrfShf-EndMod(7) Level 50: Barrier Core Epiphany Level 0: Marshal Level 0: High Pain Threshold Level 0: Born In Battle Level 0: Invader Level 50: Assault Radial Embodiment Level 50: Degenerative Radial Flawless Interface Level 50: Cardiac Core Paragon ------------