Tela, Keeper of Beings

+2: Create 2 1/2 Human Researcher creature tokens with "Sacrifice this creature, draw a card."
-2: Create a token that is a copy of target creature. It is a researcher in addition to it's other types. Exile it at then end of your next end step.
-4: Scry X cards, then draw X cards, where X is the number of researcher creatures on the battlefield under your control.