Jan 23, 2019
If I use Boseiju who shelters all to cast temporal extortion. Will the spell be countered if a player pays the life to counter it?
(The question was clarified that there’s a cost increasing effect like Thorn of Amethyst on the battlefield to allow Boseiju to be used.)
No, it won't.When you cast an instant or sorcery spell with the mana from Boseiju, that spell can't be countered for any reason. If a spell or ability tries to counter that spell, it won't be able to. In the case of Temporal Extortion's own triggered ability, it will resolve as normal except that it won't be able to counter the spell. Players can still pay half their life if they really want to, though.