Saheeli, the Sun's Brilliance is a mythic Legendary Creature — Human Artificer card from The Lost Caverns of Ixalan (LCI), collector number 308. Current market price: $1.18 (foil $1.59), TCGplayer market prices via Scryfall.
{U}{R}, {T}: Create a token that's a copy of another target creature or artifact you control, except it's an artifact in addition to its other types. It gains haste. Sacrifice it at the beginning of the next end step.