(2/2/2024) Turning a permanent face up or face down doesn't change whether that permanent is tapped or untapped
Force of Will and Force of Negation exemplify how Blue gets to break the mana rules with free countermagic
If that creature is a legal target but the other creature isn't, you'll still put the +1/+1 counter on the creature you control, but neither creature will deal or be dealt damage
the main benefit here is that Basal Thrull only costs 2 mana to produce 2 mana
While this sounds hilarious, I expect it to be more of a fun Against the Odds episode than a tier strategy, in large part because there isnt really a backup Venerated Rotpriest, which makes the combo plan seem inconsistent
Painter's tape is a good choice because its adhesive is not particularly strong or residual, making it easy to remove without potentially damaging anything