Jadøn, Niv-Mizet's Bottom

Instant and sorcery spells you cast in the Engineering category cost {u/r} less to cast.
{1},{t}: Tap Jadon, Niv-Mizet's Bottom, counter spell that does not have "no fun" in its casting cost.
{2},{t}: Exile target Mark if an Astrology trigger is on the stack
"Experiment on me, Papa Niv" - Jadon, Niv-Mizet's Bottom