And the upside's actually pretty good for a dinky little common like this
Your deck can only comprise cards of two different ink colours (Amber, Amethyst, Emerald, Steel, Ruby, Sapphire)
Skeleton Ship, had was is now referred to as Islandhome, but this 0/3 was best used for its ability, TAP: Put a -1/-1 counter on target creature. Slowly, but surely, you could wittle away an army of 1/1 weenies or shrink a big creature down to size
Garruk is the complete package for ramp green
Aside from those, Id recommend playing multiple Scoop Up Net (either three or four) so that you can easily use Comfey multiple times, as well as some Air Balloon (typically two or three) so that you can retreat your Comfey
U/G is an extremely potent color combination, thanks to the combination of big creatures, mana ramp and card draw, and Tishana provides everything a deck could want in spades, with her only requirement being a battlefield full of creatures