Update common.groovy
Update common.groovy

Created a number of common cards, will add more as needed.
Cardshifter/Cardshifter,SirPython/Cardshifter,June92/Cardshifter,SirPython/Cardshifter,SirPython/Cardshifter,Cardshifter/Cardshifter,June92/Cardshifter,Cardshifter/Cardshifter,June92/Cardshifter