The Unknown Wizard

Eminence — As long as The Unknown Wizard is in the command zone or on the battlefield, other playtest cards you cast cost less to cast.
Whenever The Unknown Wizard enters or attacks, look at the top ten cards of your library. You may put a legendary playtest card from among them onto the battlefield. Put the rest on the bottom in a random order.

USD reference: $14.33 (~₱897.01)