Target gains +N/2|+N/2.
N = discarded card's cost + 2.
Confusilicious! Otherwise I'm very interested by this idea. I like the potential as CC with Reverse Time (at a price, of course).
Basically take the cost of the card discarded with Ankh, add two, then split it evenly between ATK and HP.
Such that a Light Dragon (12
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) grants +7|+7? Seems pretty powerful (can basically turn your cards into Blessings before you've drawn them).
What about odd costs? Rounded down?