Legendary Unit — Warrior • Cost: 7 • ATK: 7 • HP: 8
Arrives: Choose an oath: "I won't play cards from my hand besides workers" or "I will skip my draw/discard phase." You can't break that oath while Oathkeeper is in play.
Swift strike, resist 2
② → Sideline all patrolling units.
White • Strength Tech III
If you choose the first oath, you can still "put cards into play" with an effect that has that wording, such as Sanatorium, without breaking the oath. — Sirlin, 03/09/16
Choosing the second oath means that instead of discarding your hand and drawing new cards during the discard/draw phase, you simply keep your same remaining cards in hand for the next turn. — Sirlin, 03/09/16