It made us think of Dungeons and Dragons Rangers (incidentally, my favorite class to play), and Rangers are green due to their contact with nature
Worn Powerstone, Thran Dynamo, Gilded Lotus These cards are often very vulnerable to sweepers and wind up costing you a card
Both the spell and the resulting creature are colorless and have a mana value of 0
That still wasn't enough though
When it comes to combat tricks, beware of a creature dying to first strike as Heightened Reflexes, Raking Claws and Sanctuary Smasher can all give a creature that keyword
His greatest accomplishment so far has been Shirokai, a mech with a kami bound to it Chishiro, the Shattered Blade Chishiro was an elite samurai in the Order of Jukai who could channel the magic of Kaima, Kami of Forest Fellowship, through his sword