Okay, after damage is on the stack, I'll activate the Wretch twice to remove Az's Blastoderm and a Repulse.
train's up.
Az: 17
Hand: 0
In Play: {Fst,Fst, Fst, Isd, LS, LS, TT,}(T) Jolrael, Empress of Beasts(3/3,2G, T, Discard two cards from my hand: Until EOT, all lands target player controls...