Summoner's Art is a Normal Spell Card.
Spell Cards are usually activated from the hand on your turn unless their type gives another timing window.
On the current TCG and OCG Forbidden & Limited lists tracked here, Summoner's Art is Unlimited.
YGOPRODeck lists Summoner's Art for these formats: Speed Duel, Duel Links, Common Charity, Edison, TCG, OCG, Master Duel.
A listed print of Summoner's Art appears in Astral Pack Six (AP06-EN011) at Super Rare rarity.
Among markets shown on this page, the lowest listed snapshot for Summoner's Art is about $0.21 on Cardmarket (prices change frequently).
