Freyalise's Radiance

Cast this spell only if you control a snow land.

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Creatures with flying don't untap during their controllers' untap steps.

Mercenaries don't untap during their controllers' untap steps.

Islands don't untap during their controllers' untap steps.

Blue creatures don't untap during their controllers' untap steps.

At the beginning of each player's upkeep, that player may choose any number of tapped blue creatures they control and pay for each creature chosen this way. If the player does, untap those creatures.

, : Target creature doesn't untap during its controller's next untap step.

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Black creatures can't attack you.

Nonblack creatures can't attack you unless their controller pays for each creature they control that's attacking you.