Sphinx of the Undoing

Flying

As long as it's your upkeep, Sphinx of the Undoing
has "{t}: Scry 4." As long as it's your mainphase,
Sphinx of the Undoing has "{t}: add {u}{u}." As
long as it's your combat, Sphinx of the Undoing has
vigilance, lifelink, and hexproof. As long as it's your
endstep, Sphinx of the Undoing has "{t}: until the
beginning of your next endstep, you have no
maximum hand size."