Cheapest priced copy (Duskmourn: House of Horror Commander): $1.29 at Card Kingdom, near mint, their price list as of .
Archetype of Imagination 
Enchantment Creature — Human Wizard · 3/2 · Uncommon · Born of the Gods · #32
Creatures you control have flying.
Creatures your opponents control lose flying and can't have or gain flying.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $1.29 to $11.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Born of the Gods | 32 | Uncommon | $1.49 | $11.99 |
| Commander 2018 | 81 | Uncommon | $1.49 | — |
| Duskmourn: House of Horror Commander | 111 | Uncommon | $1.29 | — |
| The List | C18-81 | Uncommon | $1.29 | — |
4 rulings from Wizards of the Coast
- 1 February 2014While you control an Archetype, continuous effects generated by the resolution of spells and abilities that would give the specified ability to creatures your opponents control aren't created. For example, if you control Archetype of Courage, a spell cast by an opponent that gives creatures they control first strike wouldn't cause the creatures to have first strike, even if later in the turn Archetype of Courage left the battlefield. (If the spell has additional effects, such as raising the power of the creatures, those effects will apply as normal.)
- 1 February 2014The Archetype's second ability applies to each creature controlled by any of your opponents, no matter when it entered the battlefield.
- 1 February 2014If you and an opponent each control the same Archetype, no creature controlled by any player will have the appropriate ability.
- 1 February 2014Conversely, continuous effects generated by static abilities (such as an Aura that granted the appropriate ability) would resume applying if the Archetype left the battlefield.