Theres a fine line between being deep enough to satisfy TCG players spoiled by decades of Magic: The Gathering mechanics, without throwing fans enchanted by Disney cards in at the deep end and watching them flounder
And, of course, you can't mention Gisela without mentioning Heartless Hidetsugu, which deals damage to each player equal to half of their life total
Though it is low in ink cost to play, that doesn't make it low in monetary value
Another person who got the Poker Face drop revealed this hilarious Elesh Norn, Grand Cenobite as their bonus card
Many players would reach for burn, but that mechanic has a close cousin in life loss cards that dont care about anything so petty as damage or creatures
This is just a solid 2-drop with a lasting impact on the game, especially if you exploit the token production with cards like Mondrak, Glory Dominus and Purphoros, God of the Forge