The reason for unlimited drawing is because it gives you the choice to drain your deck quicker ( and lose points when it empties out ) or to wait for each turn to rack up points. The Deck is indicated as the Score's UI on the bottom right- you lose 500pts when it empties out.
And I do agree w/the time constraints! We just kept it at that speed so it matches the music- could make it pause when you hover over cards
We'll make things more clear in the future builds- really appreciate the feedback mate :D