Requires 4 Energy , but can take Mistys help for that
I also agree with what @pfm said, the focus on the older cert number would likely be the best bet of making sure the stamp is rather legit
Category list Elder Entity, Old Entity, Outer Entity Elder Entity, Old Entity, Outer Entity Card List "Elder Entity, Old Entity, Outer Entity" Card List (All Cards) "Elder Entity, Old Entity, Outer Entity" Deck List "Elder Entity, Old Entity, Outer Entity" Card List "Elder Entity, Old Entity, Outer Entity" Product List CategoryCard List short cut @ @Ignister, A.I
Even though weve slowly gotten some interesting coin flip (and coin flip support) cards over the years, its still a rather small pool of cards, which makes it a pretty unidirectional kind of build