
When Way of the Cryomancer enters, empower Jaceempower JacePut five loyalty counters on a Jace token you control. If you don't control one, first create a blue Jace planeswalker token with "[−1]: Surveil 1" and "[−3]: Draw a card." 5. (Put five loyalty counters on a Jace token you control. If you don't control one, first create a blue Jace planeswalker token with "[−1]: Surveil 1" and "[−3]: Draw a card.")
Planeswalkers you control have "[−3]: When you next cast an instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy."
Hover an underlined rule to see what it means.
Read from the rules text. A card that enables a keyword makes or is the thing; a card that rewards it gets better when you have it. Two cards interact when one enables what the other rewards.