The Dash ability of Ragavan, Nimble Pilferer gives the card even more flexibility to attack out of surprise, which leads the opponent to never be sure about clearing the board or attacking without leaving a blocker behind
Once he lands, though, he slots in nicely with Ghost-Spider in rewarding you for playing cards from anywhere other than your hand
By ending the turn, cards like Cauldron Dance or effects like unearth that allow you to temporarily put a card from the graveyard onto the battlefield will miss their sacrifice triggers
The experience counter goes on you, the player, not on Aang
When it ETBs, you equip a legendary dork for free if you control one, like, say, your Commander