I was watching a match on SCG, where there was a WU Heroic versus GW Megamorph. At one point, the latter put the former into a very bad position by playing a [scryfall]Boon Satyr[/scryfall] on a [scryfall]Den Protector[/scryfall] to bypass blockers on the Heroic side.
My thought: Why wouldn’t the other side use this evasion?