As long as you are that battles owner and controller (reminder: the chosen defender for a siege battle is not their controller), you could technically choose it for a sacrifice effect
Some of them can be fairly simple, such as opening a pack, while others could require you to collect specific cards or register a set number in the Card Dexbasically the record of your collection
Email: Works as a backup notification channel but may be too slow for products that sell out in minutes
Tevesh Szat, Doom of Fools wants to be left alone so you can get to his -10 "limit break" ability and gain control of all commanders in the game, whether they're on the field or not
You should look carefully at this artifact since it performs double duty in typal decks
Unlike other rainbow lands that deal damage, enter tapped, or require specific conditions, Command Tower works immediately and unconditionally