Can it be "switched off" whenever you want after you have made the payment, but when the effect becomes inconvenient for this card
While the adventure part of the spell is on the stack, the spell has the mana value of that adventure, otherwise, it is the cost of the main permanent
Koh, the Face Stealer (Mono-Black) A shapeshifter commander that plays exactly how youd expectstealing abilities, sacrificing creatures, and copying your opponents best tools
The rarity code (SR, SAR, AR, UR, MUR) is printed there in small Latin letters, usually next to the card number (e.g., 123/110 SAR)
There are a few card types I havent covered here such as traps , artifacts, and planeswalkers , but Ill get to them another day
But if you came across a collection that was stored carefully, its worth looking closely before assuming anything