Theres a lot of flexibility with the Amethyst/Steel deck, especially if we see more Illusions in future Disney Lorcana sets
Either you played it normally or you could have it come into play with a +1/+1 counter and it gained "must attack each turn if able." My one suggestion was to shift the negative from the red "must attack" to the black "can't block." I felt that it would be better flavor, would play better, and would create fewer bad feelings for the players (as a rule, players dislike when their creatures are forced to do dumb things that get them killed)
If it leaves your hand before then, it won't enter the battlefield at all
Niv-Mizzet, Supreme Niv-Mizzet, Supreme doesnt actually have jump-start itself, but it is a way to give it to other cards
And thus, Detain came into existence and graced us with its presence
Many of the cards are rather lackluster, but they do feature some great art, and there are, of course, some unique cards that contribute to some fun builds