Peppi and Eiji, Skygazers

Flying, protection from creatures without flying

At the beginning of each upkeep, choose up to five
colors. Until end of turn, spells of the chosen color(s)
cost {1} less to cast for each unchosen color and spells
of the unchosen color(s) cost {1} more to cast for each
color chosen this way.

"Together and forever we color the sky."