Run your collection Add, remove, and swap printings just by asking
When this creature leaves the battlefield, return all cards exiled with it to the battlefield under their owners control
Your spells are very low cost, so I don't see how Llanowar Elves are needed, try to get off them and use 4 Bassara Tower Archer, it seems she works a lot better than the troll, due she's constant hexproof and keeping good your green devotion
(Rarity varies between uncommon and mythic rare.) RAVNICA is under seige as Nicol Bolas and the planeswalkers of the Gatewatch face off in their epic final battle
There are probably a number of cool ways to set up board locks with this ability, but one of the most straightforward would be having Gerrard, Adarkar Valkyrie, Oblivion Stone/Nevinyrrals Disk, and Urabrask, the Hidden