
+1: 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." X, where X is the number of Islands you control.
−3: Until your next turn, whenever a creature attacks you or a planeswalker you control, it gets -5/-0 until end of turn.
0: Exile all but the bottom card of each opponent's library. Activate only if there are twenty-five or more loyalty counters among Jaces you control.
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.