Certainly, but waiting for the opponent to play their dragons isn't viable.
I didn't say wait for the opponent either...
What, you want to mindgate dragons? (Good luck getting the quanta for making this work) Explain yourself, as I said I'm curious.
My proposal for a nerf would be for X to be half the cards in your hand, this way you get less variation too and it is easier to reason about the card. I'd make health equal to X too. Increase the cost by 1 too and increase the base attack by 1 so it's not too UP next to other creatures of it's cost.