Both cards move counters around, but Black Panther can create them
Sure, you have to sacrifice this card in order to get that extra turn but combine this with some enchantment or permanent recursion/reanimation, and youve got the makings of an easy infinite turn loop
But once they hit the table, your opponents will have a hard time staying afloat atop the ocean of value you generate.
That said, I could see running more for example, if your deck goes all-in on the commander, you could potentially run as many as 10 protective spells
Some might reign supreme for a while until another creature is released to take the spotlight
While we don't yet know the pricing on either of these collectible mini MTG sets, IGN has reported that the foil and non-foil versions of the Monty Python Secret Lair will go live for pre-orders on Monday, July 29