Extractor Demon interaction.

[THEchubbymuffin]

I know this is from standard but I trust your rulings over anybody elses.

Setting:
I am playing the semi-dredge deck from standard.

I start to combo and I unearth: 3x Extractor Demon, 1x Fatesticher, 2x Viscera Dragger, 2x rotting rats.

Now my opponent survives the attack. At the end of the turn what is the max number of cards I am allowed to mill my opponent?

I believe it is 42 because you could stack it so you mill all of the non ED (Extractor Demon) first, 3*2*5. Then you could mill 6 for the first ED, 4 for the second ED, then 2 for the last ED.

Thanks in advance.

[heroicraptor]

you control the triggers so you choose what order they go on the stack

[parallax]

Extractor Demons don't count themselves, so 36.