The first of those is cost reduction, and the second is when a card allows you to take extra turns
That said, unlike Teferi, all of the Flash pieces in Standard get wiped by the effect of Ultima, which makes this combo a lot less powerful
By stealing a permanent on entry, Agent of Treachery also encourages players to use cards that ignore Meek Attacks final downside
EDHREC already clocks around 27,000 deck inclusions, and Perch now shows up in a higher percentage of Choco lists than in bird-lord Kastral, the Windcrested strongly suggesting there's a new Bird Boss in town
It gives a respectable +2/+2 equipment to the creature its on, as well as protection from Black and Green
Some topics he studied, like heraldic, came in handy for his role-playing storytelling