Dark Sage Tutelage

Discipline {3} (at your upkeep you may pay {3}
if you do add a Discipline counter to this card and
unlock the next Mastery )
•Mastery 1: If an instant or sorcery would
deal damage to a creature, that creature
gets a -1/-1 counter.
•Mastery 2: Instant and Sorcery you control gain;
"then deal 1 damage to target creature."
•Mastery 3: Instant and Sorcery you control gain; "Retrace"