Amulet of the Four Seasons

Wondrous Item Legendary (this item requires attunement)

This item counts towards the Four Seasons set bonus. This amulet glows different colors depending on what the current Eladrin's season is. The amulet stays in state when the Eladrin removes the amulet, until a different Eladrin attunes to the amulet and dons it.
For non-Eladrin wearers this item has no effect.

Summer: The amulet glows a ruby red. Fire Bolt critically strikes on a 19 or a 20.

Autumn: The amulet glows a deep amber. When Friends ends, the creature must make a DC 15 intelligence saving throw to realize it has been manipulated.

Winter: The amulet glows a light blue. Chill Touch makes all creatures attack with disadvantage against you.

Spring: The amulet glows a vivid green. Minor Illusion can be used to sustain two illusory effects at once.