A cheap clone of any creature on the battlefield can be quite valuable
The cheaper the artifacts these Mages get, the better they are
The Monster Manual What follows is a pretty comprehensive list of creatures that I have considered for Birthing Pod in GWB, along with explanations of why they're good or only situational
You simply don't have the gas to completely burn someone out unless you have Guttersnipe support or have managed to apply good pressure with your few dorks
Obviously, there are the usual Simic +1/+1 counter strategies, but you can also use Krajs ability to give it the activated ability of a creature that untaps itself, thereby creating an infinite loop
Hinterland Chef Spellbook Almighty Brushwagg Brushstrider Lotus Cobra Nessian Hornbeetle Deathbonnet Sprout Frilled Sandwalla Highland Game Kazandu Nectarpot Scurrid Colony Spore Crawler Moss Viper Ironshell Beetle Gilded Goose Territorial Boar Moldgraf Millipede Theyre all tasty food