The cards I mentioned above are more or less the only ones that I rent.
Some useful cards (less 1DEC/DAY/CARD):
Neutral: Creeping ooze, Goblin mech, Sand worm
Green: Nectar queen
Blue: Sea monster, Venari Wavesmith
White: Djinn Renova, Lorna Shine, Baby Unicorn
Red: Fineas Rage, Lava Launcher
Black: Owster Rotwell
Dragon: Djinn Chwala
I don't play Dragon/Green if i can.
The more important is to play the rule and counter the opponent. For exemple, Owster Rotwell can win a game by himself if you know the opponent will play magic.
After that i only rent for power, it can be long the first time to check for cost effective cards but after that just don't forget to renew the rent.
Great! Thanks. Saw your lineup in peakmonster as well.