MTG Keyword Rules — Comprehensive Rules Glossary

To convert a permanent, turn it so that its other face is up. This follows rules 701.27a–f, 712.9–10, and 712.18. Those rules apply to converting a permanent just as they apply to transforming a permanent.

Although converting a permanent uses the same physical action as turning a permanent face up or face down, they are different game actions. Abilities that trigger when a permanent is turned face down won’t trigger when that permanent converts, and so on.

If a spell or ability instructs a player to convert a permanent that isn’t represented by a double-faced token or a double-faced card, nothing happens.

If a spell or ability instructs a player to convert a permanent, and the face that permanent would convert into is an instant or sorcery face, nothing happens.

If an activated or triggered ability of a permanent that isn’t a delayed triggered ability of that permanent tries to convert it, the permanent does so only if it hasn’t converted or transformed since the ability was put onto the stack. If a delayed triggered ability of a permanent tries to convert that permanent, the permanent does so only if it hasn’t converted or transformed since that delayed triggered ability was created. In both cases, if the permanent has already transformed or converted, an instruction to do either is ignored.

If a spell or ability states that a permanent can’t transform, that permanent also can’t convert.