Eshaier's Hemomancy

When this card enters the battlefield, choose between 1, 2, 3, 4 or 5.
Hemomancy X, when X is the number you choose. (While you have 15 or less life, when you successfully take more than X damage, this card gives X damage to an opponent.)
"This one was Sodkar herself who taught me..."
—Eshaier Hematoan