At the beginning of your end step, you may exile another artifact you control or an artifact card in your graveyard. If you do, seek an artifact card. That card perpetually has base power and toughness 1/1 and becomes a Gnome creature in addition to its other types.

Starting intensity 3

Return any number of creature cards with total mana value X or less from your graveyard to the battlefield, where X is Legion's Chant's intensity.

All Chorus cards you own intensify by 1.

Flying

Whenever Valiant Batrider deals combat damage to a player, that player gets a one-time boon with "When you cast a noncreature spell, you may pay . If you don't, each opponent draws a card."

Seek a nonland artifact card with mana value X or less and put it onto the battlefield. If a card with mana value less than X is put onto the battlefield this way, this spell perpetually gains "This spell costs more to cast," then return this spell to its owner's hand.