By using the GX cards strategically, these Pokemon can be of tremendous value to you
There are also 51 colourless cards, most of them either being equipment that grants vigilance or artifact creatures with it
In Tempest, it was turn one (Mogg Fanatics, shadow creatures, and flyers), Invasion turn two (2/2 bears for every possible color combination plus several one- and two-mana apprentices and utility creatures), and Mirage turn three
While I think it is technically optimal since it's basically a free roll, we didn't play against counterspell decks at all
This leads to the following cards being brought in: Flusterstorm is there to hold back their initial discard for at least one turn in order to enable us to set up some kind of progress
You don't get another wizard when you re-cast the spell, but thats an incredible deal, especially when you consider how much value black decks squeeze from a stray creature token