While my process for 5-color decks is fairly similar (start with rares/bombs, add the best uncommons), I also start with adding all my fixing too
Some of my early decks Here are some of my first decks that I've built and played with
Even with its wacky name, it gives off the impression that the opponent is about to get a massive beatdown that is bound to hurt
My go-to combination is a +1/+1 counter and a first strike counter, with a heavy emphasis on obtaining shield counters from another source like Boon of Safety
If you don't want to cast it at that time (or you can't cast it, perhaps because there are no legal targets available), you won't be able to cast it later for the miracle cost
As it finally touches you, startlingly cool to the touch, and the flowing flesh gathers form on its visage, you know exactly what'll be there, dont you