It is easy to identify as it is numbered as a holo card (5/82) but it was printed as an uncommon card
In a Two-Headed Giant game, life gained by your teammate won't cause the ability to trigger, even though it causes your team's life total to increase
This is kind of a complicated answer
It enters with two additional +1/+1 counters on it if it's a creature
Iroh, Grand Lotus (Alternate Art) Katara, Bending Prodigy Tapping six artifacts and/or creatures to draw a card with Katara's waterbending ability sounds like a lot, but the cost is buffered slightly by Katara getting more powerful if you include her among the tapped
Whether its cheaply doubling up your big damage spell or getting a Tooth and Nail of your own (tipfirst creature to get when yours resolves is Draining Whelk), its one of those cards that will provide an endless supply of epic plays at your tables