Terriermon (X Antibody) [BT16-038] [Beginning Observer] Time Lord A quill from the First

A quill from the First Reader at Candlekeep

" —Faysal al-Mousa

you may cast an instant or sorcery spell from your hand with mana value less than or equal to that damage without paying its mana cost

if Hatchet of Mind was the last attack this turn

Terriermon (X Antibody) [BT16-038] [Beginning Observer] Time Lord A quill from the FirstSet: Beginning Observer Card type: Digimon Rarity: Uncommon Digi type: Beast X Antibody Play Cost: 3 Form: Rookie Attribute: Vaccine Digivolve Cost: 0 Digivolve Cost Level: 2 [[Digivolve] [Gummymon] [Terriermon]: Cost 0] [Your Turn] When this Digimon would digivolve into a card with [Gargomon] or [Rapidmon] in its name, reduce the digivolution cost by 1. [Your Turn] While this Digimon has [Gargomon] or [Rapidmon] in its name, it gains [Piercing].