I wasn't implying your card was hastily composed; only the example of mechanism that I proposed as an example.
The "delayed creatures" mechanism would count for your opponent's creatures, which is why it becomes usable through the Time shield Procrastination. Including your own creatures would be fine of course, as it would serve as a deterrent for your opponent to use Procrast, Wardens and Basilisk Blood.
Yes, as I mentioned I think powerful cards like these need to require some other component besides quanta cost. If we include those, we can introduce cards that would otherwise be unbalanced. The problem, of course, is that those cards become situational, and we absolutely have to avoid making them OP no matter the situation. Flavor-wise however, having such awe-inspiring cards can make an element a LOT cooler.