Alistair, the Brigadier
Legendary Creature — Human Soldier
Whenever you cast a historic spell, create a 1/1 white Soldier creature token.
Whenever Alistair attacks, you may pay 
. If you do, creatures you control get +X/+X until end of turn, where X is the number of historic permanents you control.
Thanh Tuấn
Doctor Who (WHO)
• #992Rulings
You choose whether to pay {8} as Alistair's second ability resolves. Notably, once it begins to resolve, none of your opponents may take actions that might change the result before it happens, such as casting a spell that destroys one of your historic permanents.
(wotc • 2023-10-13)
Rulings
You choose whether to pay {8} as Alistair's second ability resolves. Notably, once it begins to resolve, none of your opponents may take actions that might change the result before it happens, such as casting a spell that destroys one of your historic permanents.
(wotc • 2023-10-13)