Auto-mulligan or no towers bug?

[teatime]

I got Chaos Lord in Oracle today, and decided to fight it using a rainbow variant (6 supernovas and 10 QT in a 41 card deck, no sundials). Deck opens, no towers whatsoever. I lasted 6 or 7 turns before dieing and have not drawn a single tower. Is this a bug? If auto-mulligan is on that means I drew 20-21 cards in a row without a single tower...

[smuglapse]

Elements 1.21

Auto-mulligan function:

Q - How does it work?
A - If none of the cards in your initial hand can be played during the first turn (none has cost 0) you'll automatically get 7 new cards. Only once.

Q - Am I going to realize a "mulligan" happened?
A - No.

Q - Why can't I decide myself if I want a mulligan?
A1 - People would use it to drastically improve the chances of getting the desired card X in the initial hand.
A2 - It would force me to add an extra turn in pvp games before the game actually starts: more waiting, more questions, more clicking.
A3 - I still want bad/good initial hands in the game. What I do not want is having 8 cards in your hand and having to discard one during your first turn - just too frustrating.

Q - I think it should count the number of pillars instead of the number of cost 0 cards
A - There are pillar-less decks

Q - I strongly prefer the system where I can have a mulligan, but if I get one I'll get less cards and it can be repeated up to 3 times, unless it is a first Monday of the month in which case I can get 2/3 of the cards that my opponent had yesterday.
A - Simple = Better

Q - I played a game where I still could not play any card during my first turn
A - You might still draw 14 cards and no pillars - did you try adding pillars to your deck?