Cheapest priced copy (Jumpstart 2022): $0.35 at Card Kingdom, near mint, their price list as of .
Drowsing Tyrannodon 
Creature — Dinosaur · 3/3 · Common · Core Set 2021 · #178
Defender (This creature can't attack.)
As long as you control a creature with power 4 or greater, this creature can attack as though it didn't have defender.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
3 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Jumpstart 2022 | 648 | Common | $0.35 | — |
| Foundations Jumpstart | 651 | Common | $0.35 | — |
| Core Set 2021 | 178 | Common | $0.35 | $0.49 |
2 rulings from Wizards of the Coast
- 23 June 2020Once Drowsing Tyrannodon has attacked, it will remain an attacking creature even if you no longer control a creature with power 4 or greater.
- 23 June 2020If Drowsing Tyrannodon's power is raised to 4 or greater, it will allow itself to attack.