After extensive study which included playing 1000 games against BL, I have determined the "average BL deck".
Here it is:
Hover over cards for details, click for permalink
4sa 4vj 52g 52o 52q 52t 55p 592 5c4 5f0 5f5 5f9 5fa 5fc 5ia 5l9 5li 5lm 5mq 5oh 5rg 5rk 5ro 5ru 5up 5v1 61o 61s 61t 61v 8pt
As you can see we have evidence of mono-aether, immo rushes, firestall, ghostmare, monodeath rush and rainbow, which combined make up 103% of BL decks.
The random cards are the poor cards the oracle chooses for BL players, which become part of an oraclebow or oracleaether.
To anyone who is whining "arena decks have 35 cards", this in humor. Chill.