how many damage

[imFourth of Phils]

if i have in play {Furmace of Rath} and {Gisela, Blade of Goldnight} and attacked Gisela, how much damage she produce? 15? or 20?

thanks

[MisterJH]

20, separate effects so itll double once then double again.
5x2=10x2=20

[imFourth of Phils]

thanks mates