Derrick's Lab

{x}{r}, Discard an artifact card with converted
mana cost X or less: Reveal the top X cards of
your library. You may cast an artifact or creature
card with converted mana cost X or less from
among them without paying its mana cost. That
permanent gains haste until end of turn. Exile it
at the end of turn. Derrick's Lab deals X damage
to you.
"Trial 93, failure. Trial 94... positively successful
aside from the explosion it caused." - Derrick