Keywords have their own section in card files. Each keyword requires one line under the [Keywords] section of a card. These are keywords that can't be written as a regular ability. "Keywords" in Magic that are regular activated or triggered abilities don't get special treatment here. You have to write them out (for example, keywords like Undying or Outlast aren't on this list because they're regular abilities)
List of supported keywords
CantAttackIf(condition, rulestext)
CantBeCountered(condition, rulestext)
CantBeEnchantedBy(condition, rulestext)
CantBeTargetedBy(condition, rulestext)
CantBlockIf(condition, rulestext)
CantCast(condition, rulestext)
Changeling()
Convoke()
Deathtouch()
Delve()
DoubleStrike()
Enchant(condition, rulestext)
ExtraTrigger(condition)
Flying()
FirstStrike()
Haste()
Indestructible()
Leaping()
Lifelink()
MustAttackIfAble(condidion, rulestext)
Proof(condition, rulestext)
Protection(condition, rulestext)
Reach()
Shadow()
SkipUntap()
SuppressAbilities(condition, rulestext)
SuppressTrigger(condition, rulestext)
Trample()
Undead()
Vigilance()