Sword of Truth and Justices combat damage trigger gives you a +1/+1 counter and Proliferates, allowing you to quickly augment your board while also buffing and protecting your creature from many opponents
Since were running Morph Space Goo, we get to Shift cards, like Robin Hood Champion of Sherwood, Beast- Tragic Hero, and Tinker Bell Giant Fairy getting to discard cards from the opponents hand on earlier turns if Bucky is on the board
Not quite Craterhoof Behemoth, but I'm assuming you went with a treefolk deck to put the powerhouses on the sidelines for a bit anyway
Many, many more Allies were revealed on August 12, in both the main set and the Commander precons
This means they are less of a risk to play than almost any other card, the worst they can be is a wasted mana and a delay in your information and even in that situation they are still helping by effectively allowing you a smaller deck
Once you know what style you like, choosing a color will become easier