He doesn't know if the candle spell will trap him in here or separate the rooms, so he decides not to take his chances. It's not like he's got any limit of energy to use. Still in the hidden room, Remy crouches down and puts one palm flat on the floor. It starts to glow. This is difficult, because this is not a moving object, but just like he can calculate the kinetic potential of something, he can force that same potential into something without it. He'll just need a trigger to convince it, and from the sounds going on in the main room, he's sure he can find one.

Once the floor is glowing uncomfortable, he gets up and goes to join Ilde, kicking ants out of the way. A particularly large soldier ant zooms after him, and he sends a charged shard of glass into it.