I'll give a quick example

Use poly send Shadowmist/whatever to the grave. Search with shadow mist. Get a card. Diamond dude for mill or Malicious for destiny draw.

Malicious plus destiny nets you a plus 1 since you can search him from the deck and he can be polyed with another destiny hero for dystopia then burn with a level 4 d-hero in grave.

Diamond dude lets you change things up maybe get lucky.

Mask change works on all heroes.

Free D-hero if you use over destiny to bring out whatever for a fusion or go into a rank 4.

twin twister shadow mist for a free card and back row removal.

decision guy for a free monster recovery and to block level 6 or higher monsters from even doing anything.

Scapegoats on opponents turn for free plasma or dogma or if you want fuse them for first of dragons.