Gebs ult is a teamfight ult. Most people suck at Geb since they just spam abilitys, he's a pretty good support if you can calculate when to use your CC and when not. His shield is what makes him good though.
Mercury and Osiris, since both work better with Bloodforge and Mercurys passive + his need for mov speed, Joust 1v1 mostly. Normally under ADCs people win with devos gloves since they give sustain.
Vulf wrote:I got into a discussion with someone the other day on Heartseeker vs Devourer' Glove.
8% Movement Speed
PASSIVE - You gain +1 Physical Power per stack. You receive 2 stacks for a god kill and 1 stack per minion kill. The stacks are halved on death. (max. 50 stacks)
+75 attack at max stacks.
PASSIVE - You permanently gain +.5 Physical Power and +.25% Physical Lifesteal per stack, and receive 5 stacks per god kill and 1 stack per minion kill. (max. 60 stacks)
+60 attack and 25% lifesteal at max stacks.
I don't really see a reason to get Heartseeker over Devourer's Glove unless you are snowballing hard and dying isn't really a big issue.