the only idea come to mind is e-hero shadow mist.
summon blazeman > add poly > Revoke Fusion > discard poly > s.s shadow mist > add quick-play > s.s monster from graveyard(?) > mask change > ? > ?
No Fusion names Shadow Mist as a material, you couldn't Special Summon it with Revoke Fusion.
Really, the "best" use for it is Special Summoning high-level effect monsters like Bladedge or Buster Blader. (Normals have Ancient Rules.) It's not a good card regardless, though.
When this card is Fusion Summoned: Send 1 Lv. 4 or Lower "HERO" monster from your Deck to the Graveyard. When this card is sent to the Graveyard: Special Summon 1 Lv. 4 "HERO" monster from your
if "Elemental Hero Shadow Shocker" effect activated (idk the rule ok or not). you special summon a lvl 4 monster. (b/c i m not sure, i use > ? > ? on the 1st comment.)
if rule ok
rank 4 xyz with shadow mist + 1 hero > mask change another hero > xyz effect active... etc