曲愿师

Text:

变身（你可牌面朝下地施放此牌并支付，将其当成2/2生物。可随时支付其变身费用使其翻回正面。）
当曲愿师翻回正面时，为仅指定单一目标的目标咒语或异能更改目标。

Rulings:

• 10/4/2004 The trigger occurs when you use the Morph ability to turn the card face up, or when an effect turns it face up. It will not trigger on being revealed or on leaving the battlefield.
• 4/15/2013 If a spell with split second is on the stack, you can still respond by turning this creature face up and targeting that spell with the trigger. This is because split second only stops players from casting spells or activating abilities, while turning a creature face up is a special action.
• 3/16/2018 You don’t choose the new target for the spell until Willbender’s triggered ability resolves. You must change the target if possible. However, you can’t change the target to an illegal target. If there are no legal targets to choose from, the target isn’t changed. It doesn’t matter if the original target of that spell has somehow become illegal itself.
• 3/16/2018 If a spell or ability targets multiple things, you can’t target it with Willbender’s triggered ability, even if all but one of those targets have become illegal.
• 3/16/2018 If a spell or ability targets the same player or object multiple times, you can’t target it with Willbender’s ability.