Thoughtcast was already in the deck, so adding its metallic, Mulldrifter-like friend, Thought Monitor, makes perfect sense
These are untested, but they provide a good path for further research
Borborygmos and Fblthp Borborygmos and Fblthp offer a lot of value for just 5 mana
There are so many strong one-mana spells that cantrip, that this becomes a Kraken-sized threat the turn it comes into play
Or, you can pick two effects that have very short rules text so combining them is no longer than the text of a single effect
The Verdict This is the only deck in the bunch that Im a little low on, simply because disguise isnt different enough from morph to make it feel that distinct from the superior Kadena, Slinking Sorcerer precon