Itinerant Propagandist

Navigate {2}{w}{u} ({2}{w}{u}, {t}: Exile this creature.
Draw a card. At the beginning of your next upkeep,
return this card from exile to the battlefield
under your control. It gains haste until end of turn.
Navigate only as a sorcery.)
As long as Itinerant Propagandist is exiled, if it navigated during your last turn, creatures can't
attack you or a planeswalker you control unless
their controller pays {2} for each of those
creatures.