Cephalon Simaris

Synthesis - When you cast this spell, for each opponent,
choose a creature that player controls. Exile those
creatures under this spell and create a token that's a copy
of one of those creatures, except its power is equal to half of
the total power of those creatures rounded down, its
toughness is equal to half of the total toughness of those
creatures rounded down.

"A full Synthesis has been completed. I thank you, Tenno. You may explore the Sanctuary for new knowledge." - Ceph