Cherish, Stormlight Guide

Stormlight 1 (Instants and Sorcery spells you control cost {1} less for each permanent you control with Stormlight).

Creatures you control have Prowess.

Whenever you copy a spell, creatures you control gain +1/+1 until the end of turn.

{t}: The next spell you cast this turn control gains Storm. A spell cannot gain Storm from this ability if it already has Storm.