rent tactics for 1 day on only 40 dec

so where do I begin?
well I started today with a pocket of 40 dec then I went to rentals and rented lord orianthus and cornealus for 30 dec scored a robo dragon for 6 dec and then rented an axemaster for 2 dec wow this budget is getting tighter for me on a bronze II ranking well I had to squeeze those 6 to 7 hours to net me back my capital then I rented some 3 to 5 goldfoils 1 of which is a gold foil djin chuwala a djin from the earth splinter djinn renova a uraeus one harklaw and one gold foil 2 star dragon summoner managed to get my capital on those too while I was in silver III took out 50 dec to my metamask for savings then managed to fight all the way into my daily quest which netted me 2 cards a pelacor merc and a rare exploding rats card so today is really productive now I gotta rest my ECR since its below 50% now better wake up tomorrow to at least get some more dec before the rent on the 1st two rents expire