At five mana it is just way too slow and linear when compared to what you get from most planeswalkers
Images online dont do the look justice but in person, theyre quite spectacular
But what counts as an even trade
She reduces the cost of playing a face-down creature each turn, and if you have a critical mass of morphs, youll be drawing tons of cards
Your creatures are going to be sacrificed left and right so youll have lots of opportunities to do this. Shes a survivor, too: at any time, you can sacrifice a creature and pay one mana to make her indestructible until the end of the turn, like shes using its corpse as a shield
Splinters Technique Under the right circumstances, Splinter's Technique is a Demonic Tutor you can sneak into play for the added value of picking up a good creature