Trait Doctoring

The exiled card with cipher grants a triggered ability to the creature it’s encoded on. If that creature loses that ability and subsequently deals combat damage to a player, the triggered ability won’t trigger. However, the exiled card will continue to be encoded on that creature.

You choose what word you’re changing and what word you’re changing it to as Trait Doctoring resolves.

If the basic land type of a land is changed, the associated mana ability of that land will also change, but its name will not. For example, if you’ve changed “Plains” to “Island,” a card named Plains will have the basic land type Island and can be tapped for {U}, and it can no longer be tapped for {W}.

If you want to encode the card with cipher onto a noncreature permanent such as a Keyrune that can turn into a creature, that permanent has to be a creature before the spell with cipher starts resolving. You can choose only a creature to encode the card onto.

You cast the copy of the card with cipher during the resolution of the triggered ability. Ignore timing restrictions based on the card’s type.

If a creature with an encoded card deals combat damage to more than one player simultaneously (perhaps because some of the combat damage was redirected), the triggered ability will trigger once for each player it deals combat damage to. Each ability will create a copy of the exiled card and allow you to cast it.