Flying, lifelink

Whenever you cast a noncreature spell that targets only Feather, Radiant Arbiter, you may choose any number of other creatures that spell could target and pay for each of those creatures. If you do, for each of those creatures, copy that spell. The copy targets that creature. (Copies of permanent spells become tokens.)

+1: Put a loyalty counter on Huatli, Radiant Champion for each creature you control.

−1: Target creature gets +X/+X until end of turn, where X is the number of creatures you control.

−8: You get an emblem with "Whenever a creature you control enters, you may draw a card."

Converge — When Radiant Epicure enters, each opponent loses X life and you gain X life, where X is the number of colors of mana spent to cast this spell.

Converge — Radiant Flames deals X damage to each creature, where X is the number of colors of mana spent to cast this spell.

Enchant creature

Enchanted creature gets +1/+0 and has vigilance.

When enchanted creature dies, return Radiant Grace to the battlefield transformed under your control attached to target opponent.

: Prevent all combat damage blue creatures and black creatures would deal this turn.

Exile target multicolored creature or multicolored enchantment.

Instant and sorcery spells you control have lifelink.

At the beginning of your upkeep, exile an instant or sorcery card at random from your graveyard. You may cast it this turn. If a spell cast this way would be put into your graveyard, exile it instead.

Flying, vigilance

Radiant, Archangel gets +1/+1 for each other creature on the battlefield with flying.

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

When Radiant's Dragoons enters, you gain 5 life.