Historical Rules · 4 October 2019
Rule 508.7
Official source text from the 4 October 2019 Rules release
One card (Portal Mage) allows a player to reselect which player or planeswalker a creature is attacking.
Historical Rules · 4 October 2019
Official source text from the 4 October 2019 Rules release
One card (Portal Mage) allows a player to reselect which player or planeswalker a creature is attacking.