Hand disruption is a tactic where you manipulate the other players cards in hand for your benefit
Every time it enters or attacks, you get to return a permanent with mana value 3 or less directly to the battlefield, which can mean ramping with lands, recovering utility creatures, or grabbing key combo pieces
(They're artifacts with " , Sacrifice this token: Add one mana of any color.") Instant Color tag templates(None) Arcane Denial Counter target spell
Thankfully, this spell, Transpose, is useful at least as it will help to keep Emet-Selch ticking along
Note, Im not going to include effects like Makeshift Munitions which always deal the same amount of damage no matter the sacrificed creatures power/toughness
After all, there are plenty of other pillow fort cards that make it harder for opponents to attack you