Unlike others, I do not like the Grim Artifact. I run Tetra, Solar Amp, Soul Cloak. During boss fights, I swap out the Tetra for Gemini. I still see people running away when the Gemini is triggered.
You have to drop your Supply Drop before you cast your Supercharge, this will encourage players to run into your Eye of Gemini.
I can't wait for some morons to still be running away from Gemini even after the 200 buff. It will be priceless to watch some players run from a 5% damage increase plus Supply Drop buff all because they want to cry about you "stealing" their damage. lol.