TYPE
Legendary Planeswalker — Gideon

ABILITY
+1: Until end of turn, Gideon becomes a 5/5 Human Soldier Ally creature with indestructible that's still a planeswalker. Prevent all damage that would be dealt to him this turn. 0: Create a 2/2 white Knight Ally creature token. −4: You get an emblem with "Creatures you control get +1/+1."

ILLUSTRATOR
Eric Deschamps

LEGALITIES
Standard Future Historic Timeless Gladiator Pioneer Explorer Modern Legacy Pauper Vintage Penny Commander Oathbreaker Standardbrawl Brawl Alchemy Paupercommander Duel Oldschool Premodern Predh

LANGUAGES
EN FR DE IT JP KR PT RU ES ZH-CN ZH-TW

RULINGS

• 2015-08-25 If Gideon becomes a creature the same turn he enters the battlefield, you can't attack with him or use any of his {T} abilities (if he gains any).
• 2015-08-25 Gideon's first ability causes him to become a creature with the creature types Human, Soldier, and Ally. He remains a planeswalker with the planeswalker type Gideon. (He also retains any other card types or subtypes he may have had.) Each subtype is correlated to the proper card type: planeswalker is only a type (not a creature type), and Human, Soldier, and Ally are just creature types (not planeswalker types).
• 2015-08-25 Gideon's first ability doesn't count as a creature entering the battlefield. Gideon was already on the battlefield; he only changed his types. Specifically, your rally abilities won't trigger. (Of course, Gideon's second ability will cause rally abilities to trigger.)
• 2015-08-25 If damage that can't be prevented is dealt to Gideon after his first ability has resolved, that damage will have all applicable results: specifically, the damage is marked on Gideon (since he's a creature) and that damage causes that many loyalty counters to be removed from him (since he's a planeswalker). Even though he has indestructible, if Gideon has no loyalty counters on him, he's put into his owner's graveyard.