Natures Rhythm Greens ability to tutor creatures directly onto the battlefield is one of the strongest things that the color is able to do, especially when it includes a way to do it at a reduced mana cost
This list also has a bit of a graveyard sub-theme, which makes the classic Commander card Havengul LichHavengul Lich a perfect fit for the 99
They tap for mana, summon creatures, and cast spells just like their regular printings
For the most part, this works well, but it sometimes goes a little bit off the rails, and Camouflage is a pretty good example of how extreme that can go
Its often referred to as dusting because you essentially turn cards into dust and craft them into other cards
When enchanted artifact is put into a graveyard, return that card to it's owner's hand