Doran, Besieged by Time 334/273 (Lorwyn Eclipsed) - Showcase

Each creature spell you cast with toughness greater than its power costs {1} less to cast. Whenever a creature you control attacks or blocks, it gets +X/+X until end of turn, where X is the difference between its power and toughness.

NM - $3.33
LP - $2.66
MP - $1.82
HP - $1.21
DMG - $1.00