It never became an official card type (and for some reason was not printed on the cards from 2007 to 2014)
If you look to crack packs for the slickest pulls and the highest percentage of sweet showcase cards, then go with collector boosters, otherwise, have fun with play boosters
Aquastrand Spider Cytoplast Manipulator Cytoplast Root-Kin Cytospawn Shambler Helium Squirter Llanowar Reborn Novijen Sages Plaxcaster Frogling Simic Basilisk Simic Initiate Sporeback Troll Steel Dromedary Vigean Graftmage Vigean Hydropon
Good ETB effects are rampant in EDH so those activated abilities make this a good skill testing commander, because Livio is much more dangerous in the hands of an experienced player than in a newcomer
Secret of Bloodbending Secret of Bloodbending offers two options: Either you control your opponents next combat step, or their whole turn
This deck has only 26 nonland cards, each starting with a different letter of the alphabet