Egyn's Gift of Strength

Depending on the combination of mana you used
for {r/w} {r/w}Egyn's Gift Of Strength gains the
following effect.
•{w}{w}: All damage you take is halved. All life gain
you receive is doubled.
•{r}{r}: All damage you deal is doubled.
Any damage you deal can't be prevented.
• {r}{w}: Tap X creatures you control. You gain X
life or deal X damage to target creature you don't control.