Its the reason Black Lotus tops every list of the best mythic rare MTG cards ever printed
All of the Merlin cards give an ability when returned to hand, like the Merlin Crab which gives another character +3 strength when challenging, when they are played, and when they leave play (which can be in the same turn for a super boost), and Madam Min returns cards to hand when played
But I realized that breaking them down that way implies that there is no overlap and thats just not true
Standard MTG card sleeves measure 66mm x 91mm
A lot of our job is bending the rules of Magic , or finding some tasty design space, and hoping that rules managers (who are incredibly awesome) deign it possible (thank you, Tabak and Jess!)
It was banned in Standard barely a month after is was released