Cheapest priced copy (Core Set 2021): $0.35 at Card Kingdom, near mint, their price list as of .
Setessan Training 
Enchantment — Aura · Common · Core Set 2021 · #205
Enchant creature you control
When this Aura enters, draw a card.
Enchanted creature gets +1/+0 and has trample. (It can deal excess combat damage to the player or planeswalker it's attacking.)
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Core Set 2021 | 205 | Common | $0.35 | $0.49 |
| Theros Beyond Death | 201 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 23 June 2020If the creature Setessan Training would enchant is an illegal target by the time the Aura spell resolves, the entire spell doesn't resolve. It won't enter the battlefield, so its ability won't trigger.