Hm... first of all, wrong section. It should be in Duo/Trio decks. But don't worry, it'll get moved
Let's see... I like it. I've tried an Immolation deck with Gemfinders, too, and I find it a little slow. This seems to be the case here, too, as you usually lose to other speed decks.
To make it faster, I'd swap the Phoenixes for Ray of Lights. They cost nothing and can thus be played on the first turn, leading to a faster start, more early
quanta, and alive Gemfinders.
You also seem to have a lot of
on your hands. Usually, this deck is run with 6 Golems. To fix this problem, you can replace 1 or even 2 of the Explosions with Golems.
Otherwise, looks great. I love your Momentums, Graboids, and Antlions - haven't thought of those before. Keep it up!