Teferi's Moat

Enchantment, 3WU (5)
As Teferi's Moat enters the battlefield, choose a color.
Creatures of the chosen color without flying can't attack you.¹
"Isolation is not the answer." -Urza, to Teferi.
Illus. rk post

Format Legality	Legal in Vintage, Legacy, Extended Banned in Standard
Printings (2/15)	Time Spiral Timeshifted (Special) Invasion (Rare)