Jace, Unraveler of Secrets
Jace, Unraveler of Secrets SOI
Shadows over Innistrad Mythic Rare 
Cost: Mana 3Mana UMana U
CMC: 5
Card Type: PlaneswalkerJace
Starting Loyalty: 5
Oracle Text: Loyalty up 1: Scry 1, then draw a card.

Loyalty down 2: Return target creature to its owner's hand.
Loyalty down 8: You get an emblem with "Whenever an opponent casts his or her first spell each turn, counter that spell."

2016-04-08 The emblem’s triggered ability counters the first spell an opponent casts on each turn, not just that opponent’s turn.
2016-04-08 If Jace’s emblem’s triggered ability doesn’t counter the first spell an opponent casts (perhaps because that spell can’t be countered), it won’t trigger again in the same turn to try to counter that player’s second spell.
2016-04-08 If you have multiple opponents, Jace’s emblem can trigger once each turn for each opponent.