Morgue Burst

Decided I'd do something stupid and spend $100 on crystals to catch up on Ravinca Remastered because I saw some cards I liked and wanted. Spent all 6000 crystals and got the Morgue Burst I wanted which is supposed to do damage equal to the creatures power after it's returned to the battlefield. All it did was the creatures base power, not it's total power. The card doesn't state base power so it should have been total power. Feels like I got tricked. I shouldn't be feeling that way when I spend money