![Sai, Master Thopterist [Core Set 2019 Prerelease Promos]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/sai-master-thopterist-core-set-2019-prerelease-promos.webp)
Description
| Set: | Core Set 2019 Prerelease Promos |
| Type: | Legendary Creature — Human Artificer |
| Rarity: | Rare |
| Cost: | {2}{U} |
Whenever you cast an artifact spell, create a 1/1 colorless Thopter artifact creature token with flying.
{1}{U}, Sacrifice two artifacts: Draw a card.
![Conqueror's Galleon // Conqueror's Foothold (Buy-A-Box) [Ixalan Treasure Chest]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/conqueror-s-galleon-conqueror-s-foothold-buy-box-ixalan-treasure-chest.webp)
![Underworld Dreams [Magic 2010]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/underworld-dreams-magic-2010.webp)
![Vesuva [From the Vault: Realms]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/vesuva-from-vault-realms.webp)
![Living Artifact [Beta Edition]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/living-artifact-beta-edition.webp)
![The Great Forest (Planes) [Planechase Anthology Planes]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/great-forest-planes-planechase-anthology-planes.webp)
![Hostility [Lorwyn]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/hostility-lorwyn.webp)
![Mammoth Umbra [Planechase Anthology]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/mammoth-umbra-planechase-anthology.webp)
![Pandemonium [Exodus]](https://www.cardgametoponline.com/wp-content/uploads/2026/07/pandemonium-exodus.webp)