If you can reduce the casting cost, sneak it onto the battlefield, or reanimate it, you should have a tidal wave of value coming from the top of your library through your graveyard
But Elliveres ability wants you to go wide, not tall because it cant put a role token on itself, and since each creature can only have one role, you arent going to get away with just one or two big creatures
Discover new spells, creatures, and mechanics in Magic's newest Core Set 2019
Her plus-one creates a 1/1 Red monk token with Prowess, a mechanic from Kans of Tarkir that has a creature gain +1/+1 until the end of the turn whenever a non-creature spell is cast by its controller
Those characters cant quest for the rest of the turn
One way is to simply sell to bots on the digital platform and turn your cards into tickets, which can then be used to participate in events or buy other products