[Exploit] Hardmode ToC Twins Easier

I can confirm that making your warlocks attune themselves to the light portal, then use HELLFIRE will actually raise their empowering light buff. You can get your warlocks to a 99 stack before the fight even starts!

How it works:
Light orbs deal FIRE DAMAGE upon exploding. The Light buff stacks based on how much FIRE damage is done to you. Hellfire happens to be fire damage, so when you use hellfire, the light portal buff absorbs the damage, and begins to stack the Empowered light buff.