LED, Coliseum, draw spell (priority)

[HammafistRoob]

I've been dredging for a while but this never really came up before.

I have a Cephalid Coliseum, Gemstone Mine, and Lion's Eye Diamond in play. I have Breakthrough in hand and 7+ cards in the yard.

Can I put Breakthrough on the stack, retain priority, crack LED for UUU and use one of those blue to activate Coliseum before Breakthrough goes off?

I think this works but I'm not sure, thanks in advance for answering my dumb question.

[Quasim0ff]

I've been dredging for a while but this never really came up before.

I have a Cephalid Coliseum, Gemstone Mine, and Lion's Eye Diamond in play. I have Breakthrough in hand and 7+ cards in the yard.

Can I put Breakthrough on the stack, retain priority, crack LED for UUU and use one of those blue to activate Coliseum before Breakthrough goes off?

I think this works but I'm not sure, thanks in advance for answering my dumb question.

Yeah you can.

[Bed Decks Palyer]

Of course you can. Even though LED has the timing restriction, you may still get the mana when BT is on stack and then use it to crack the Colliseum. Note that you may even play BT without having threshold, then in resp. sac the LED to fill the gy, then in resp. sac the Colliseum.