There are certainly other decks out there too that can make good use out of Mangara
Artifact Draw (CTRL to add secondary) Elk Stampede Elk Stampede (CTRL to add secondary) Make Elks Oko, the Ringleader At the beginning of combat on your turn, Oko becomes a copy of up to one target creature you control until end of turn, except he has hexproof
Getting a free resurrection stapled to both an increase in lifegain and a redundant Heliod, Sun-Crowned is bonkers good
26 Slumbering Evil (Dark Depths) Dark Depths might appear like an unassuming and harmless-looking land card at first glance
You will need to be prepared to defend her as well because she will become a huge magnet for any sort of removal because your opponents will not want you wiping their boards and will do anything possible to bring down her loyalty
Considering that a significant portion of the aftermarket for MTG Lord of the Rings cards was propped up by the hunt for this one card, its understandable that sales are slowing down