Flameshadow Conjuring is a rare Enchantment card from March of the Machine Commander (MOC), collector number 280. Current market price: $3.79, TCGplayer market prices via Scryfall.
Whenever a nontoken creature you control enters, you may pay {R}. If you do, create a token that's a copy of that creature. That token gains haste. Exile it at the beginning of the next end step.