Zelev, Master Infiltrator

Whenever you cast an instant or sorcery, create a
1/1 blue and black Rogue creature token.
Instant and sorcery spells you cast with converted
mana cost 3 or less have cipher. (Then you may
exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a
player, its controller may cast a copy of the encoded
card without paying its mana cost.)