6 Jace, Wielder of Mysteries War of the Spark introduced static abilities on Planeswalker cards, which made Jace, Wielder of Mysteries an alternative win condition for some decks
Once per turn: You can Special Summon 1 Level 8 or higher Fairy monster from your hand or GY
After leaving Yusaku's Duel Disk and taking on a human form that he can manifest in the real world through a SOLtiS, Ai demonstrates a range of new abilities
One of its attacks, Mimicry, sounds awesome, letting you copy an opponents move
The Trainer Gallery looks cool, but its not a gameplay innovation
Of all the cards with foretell this is probably the least enjoyable integration of the mechanic onto a particular card