Treglor, Reckless Gambler

{b/r}{b/r}{b/r}{b/r}, Pay X life and exile X cards from your
hand, {t}: Flip a coin. If heads, you draw X cards
plus 2 and you gain X life plus 3. If tails, you
lose X life and exile X cards from the top of your
library.
Partner with Madam Belinda, Fate-Spinner
(When this creature enters the battlefield, target
player may put Madam Belinda into their hand
from their library, then they shuffle their
library.)