Slay the Spire · Ironclad Common Attack
Headbutt
Headbutt deals damage and places a chosen card from the discard pile on top of the draw pile.
How it works
The base version deals 9 damage; the upgraded version deals 12 damage. Both versions also let the player put a card from the discard pile on top of the draw pile. The source categorizes Headbutt as a Common Ironclad Attack and does not specify restrictions on which discard-pile card may be chosen.
Read the supporting references
Check the edition and source version for patch-specific details. Guide methodology.