Each of these make your opponent pay to attack you, forcing them to keep mana up if they want to have any chance of hitting you
(2026-01-27) The tokens don't copy whether Shredder is tapped or untapped, whether he has any counters on him or Auras attached to him, or any non-copy effects that have changed his types, color, and so on
Don't forget that you can mill yourself too, letting you use Brain Freeze to fuel graveyard-based strategies or self-mill win conditions
It makes sure no creatures can be destroyed or removed, or lose life
25 new-to-Magiccards in each deck
Obviously, this doesnt work super well against Armies, since they will have counters to remove that allows this to untap, and there are other +1/+1 counters in the set too