A leveled up Albatross is pretty crazy for 1 mana.
Big fan of Magnor. I've only got a Level 2, and he can get frustrated by an armor-adder (like Level 5+ Lone Boatman), but I really like using him (enrages to 8 melee!) when there's enough mana in the match.
My favourite Untamed Common might be Cave Slug. I've got a Level 5, so it's got 3 melee with the Opportunity ability which lets it attack the lowest health opponent monster. Getting it to Scavenge at Level 6 will be even better (whenever I'm ever able to level up my Summoner.
Nice cards!