Cheapest priced copy (Aetherdrift): $1.49 at Card Kingdom, near mint, their price list as of .
Agonasaur Rex 
Creature — Dinosaur · 8/8 · Rare · Aetherdrift · #343
Trample
Cycling {2}{G} ({2}{G}, Discard this card: Draw a card.)
When you cycle this card, put two +1/+1 counters on up to one target creature or Vehicle. It gains trample and indestructible until end of turn.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
6 printings · $1.49 to $9.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Aetherdrift | 151 | Rare | $1.49 | $1.99 |
| Aetherdrift | 343 | Rare | $1.79 | $2.49 |
| Aetherdrift | 465 | Rare | — | $3.49 |
| Aetherdrift | 542 | Rare | — | $9.99 |
| Aetherdrift Promos | 151p | Rare | $1.79 | $1.99Out of stock |
| Aetherdrift Promos | 151s | Rare | — | $2.29 |
3 rulings from Wizards of the Coast
- 7 February 2025Some cards with cycling have an ability that triggers when you cycle them, and some cards have an ability that triggers whenever you cycle any card or discard any card. These triggered abilities resolve before you draw from the cycling ability.
- 7 February 2025Triggered abilities from cycling a card and the cycling ability itself aren’t spells. Effects that interact with spells (such as that of Cancel) won’t affect them.
- 7 February 2025You can cycle a card even if it has a triggered ability from cycling that won’t have a legal target. This is because the cycling ability and the triggered ability are separate. This also means that if either ability is countered (with Disallow, for example), the other ability will still resolve.