Since they have enters and death triggers, you cant go wrong with evoking them, especially since Ashlings token copy ability means two enters and death triggers per Cavalier
We'll be doing the exact same thingopening the pack, selecting one card for our card pool, and passing the rest along
This appreciation for detail is what justifies the choice to cover the subject in several articles, rather than a "quick guide to how to build a deck"
In a general sense you shouldn't play this in cube
This new Aang could be given out at a specific store, in a similar vein to the BoxLunch promotion
Either using them as blockers or sacrificial lambs on the battlefield, or 'milling' them (putting cards from the top of your library straight into your graveyard) for a more direct approach