Terriermon (X Antibody) [BT16-038] [Beginning Observer] Time Lord if Hatchet of Mind was

if Hatchet of Mind was the last attack this turn

Set: Darksteel Type: Creature — Cat Wizard Rarity: Uncommon Cost: {3}{W} {T}: Target creature gets +1/+1 until end of turn

When the Invasion Tree reached the Underworld

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

A quill from the First Reader at Candlekeep

Terriermon (X Antibody) [BT16-038] [Beginning Observer] Time Lord if Hatchet of Mind wasSet: 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].