A reasonable option, I think Lay Bare the Heart is mostly a modest upgrade over Transgress the Mind (a decent, not great card itself)
Before Ixalan and the errata, the only dinosaur in Magic was Pygmy Allosaurus
Turn one, draw a card, play nothing, discard a card in the cleanup step, throw Primeval Spawn into the graveyard, turn two basic swamp, cast Reanimate targeting Primeval Spawn is totally something you I would try do in a game of EDH if the restriction wasnt present
Attacking and making land drops are two of the most fundamental parts of Magic , and being rewarded for simply playing the game is extremely potent
A word of caution on my older posts however
Cards like Void Winnower and Jin-Gitaxias, Progress Tyrant are just a few of the exciting options to drop in with that ability