Byrdonis Nest offers seven Max HP immediately or an unplayable Byrdonis Egg. Hatching at a rest site gives Byrdpip and Byrd Swoop, a zero-Energy Attack dealing 14 damage, or 18 when upgraded. Taking the egg also gives up the Max HP and normally consumes the campfire action you could have spent resting or upgrading.
Byrdonis Egg and the route
| Your next few rooms | How it changes the choice |
|---|---|
| A nearby campfire before the difficult fights | You can obtain Swoop before the part of the act where it would help most. |
| An elite before the next campfire | You must fight that elite with an unplayable draw instead of Swoop. |
| A campfire where you already need healing | Hatching leaves the healing problem unresolved. |
| Several useful upgrades waiting | Count the upgrade delayed by Hatch as part of the price. |
| Miniature Tent already owned | The extra campfire options reduce the conflict between Hatch, Rest and Smith. |
Compare two actual routes. If the egg event leads straight to a campfire and then an elite, hatching may supply the extra damage that makes the elite affordable. If the elite comes first, the same egg cannot solve that fight. It can instead replace a useful card in a five-card hand. Changing the order of those two map nodes changes the decision even when the deck and reward are identical.
Swoop and upgrade opportunity cost
Hatching adds a full damage card; a routine attack upgrade may add only a few damage to an existing card. If your deck is short of damage and the next fire has no urgent upgrade, that can make Hatch attractive. Adding Swoop still changes your draws, however. A deck already struggling to find its defensive or setup cards may prefer seven Max HP over another attack.
Zero cost is especially useful in hands that spend all their Energy on other cards. Feral gives a specific Defect interaction: the first zero-Energy Attack played each turn returns to hand. If Swoop receives that return, an unmodified copy can deal 28 damage across two plays. Another zero-cost Attack played first can consume the return instead. The Defect zero-cost guide explains the broader draw and sequencing requirements.
Hatching and card upgrades
The egg becomes the base 14-damage card. Its 18-damage upgrade is another investment; do not credit the stronger number to a normal single-action Hatch visit. Miniature Tent changes the available combinations, but the ordinary Rest versus Smith decision still applies without it.
Eating is reasonable when carrying the egg would weaken important fights, when healing is urgent, or when an existing upgrade would solve a larger problem than Swoop. Taking it is easier to justify when a safe nearby fire converts it into damage before the next demanding encounter.