Unearth and Discover

When Unearth and Discover is cast from your hand, discard all creatures.
{t} Add one creature from your Graveyard to your hand at random, then cast it without paying its
mana cost. If it would be destroyed for the first time this turn, it isn't. However, when it would leave the field, exile it.

"Heeelllloooo little sample, what secrets do YOU hold? And could you tell me them pleeeeaaassseee?" - Amber, Fascinator of Old