Div card drop restriction

I got Divine Beauty and Seven years of bad luck in Strand. I did scry Residence to strand, but these two cards doesn't drop from Residence map. So what's going on? Is it because of the blue altar ("chance to drop div card reward basic currency")?

Yes, blue altars were likely the reason you dropped those cards.

Blue altars and certain league mechanics like strongboxes can drop cards that cannot be naturally found in a map.