ah i see, yea its my "summer vacation" as well. really i graduated college in may so i dont have summer vacation anymore. its now just a season. i happen to be spending it in italy for 3 months learning italian and doing an internship. so in a way it is a "vacation" cuz i get to travel all over but yet here i sit in my florence apartment eating crackers and nutella on the internet playing elements
one other thing..
just a thought on this series.. maybe spells instead of creatures?
i know MTG has wrath of god but
wrath as a spell could kill creatures - upgraded kills all opponents..
sloth could freeze all creatures -upgraded only freezes opponents
envy could change the stats of on monster to the same as another on the field -upgrade costs less
avarice(greed) could steal 2 permanents? or draw 2 cards -upgraded cost less
gluttony could summon a creature with devour.. stats idk.. 2/6? -upgraded stats to 3/8?
pride could boost all creatures +1/+1 - upgraded only your creatures
lust could steal(charm) a creature - upgraded steal 2 creatures if you own none]
that seem within reason? idk.. just me thinking more..