Kytheon, Hero of Akros // Gideon, Battle-Forged

If Gideon can't be attacked, perhaps because he has left the battlefield before the creature's controller's next combat, the creature targeted by Gideon's first ability can attack you or another planeswalker you control, or its controller can choose to have it not attack at all.

2015-06-22

If the creature targeted by Gideon's first ability changes controllers before it has the chance to attack Gideon, the ability will apply to it during its new controller's next turn.

2015-06-22

If a double-faced card is manifested, it will be put onto the battlefield face down (this is also true if it's put onto the battlefield face down some other way). Note that "face down" is not synonymous with "with its back face up." A manifested double-faced card is a 2/2 creature with no name, mana cost, creature types, or abilities. While face down, it can't transform. If the front face of a manifested double-faced card is a creature card, you can turn it face up by paying its mana cost. If you do, its front face will be up. A double-faced card on the battlefield can't be turned face down.

2015-06-22

Kytheon's first ability will count creatures that attacked but are no longer on the battlefield (perhaps because they didn't survive combat damage being dealt). It will not count any creatures that were put onto the battlefield attacking, as those creatures were never declared as attackers.

2015-06-22