Not only can Leafcrown Dryad not change states simply by tapping, but when it does, you don't have to think about the other state at all, because it's exactly the same as what the aura did
Draft Boosters (typically) have 10 commons, 3 uncommons, and 1 rare or mythic rare (these numbers don't include traditional foils, which aren't in every booster)
The life loss condition is not fantastic since your opponent can have three or more cards in hand and not pay any life to this effect
You get access to all colors except red, giving you the opportunity to play with most of Magic's cycling cards
Legendary Creature - Elder Dragon Tombstone Stairwell Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) At the beginning of each upkeep, if this enchantment is on the battlefield, each player creates a 2/2 black Zombie creature token with haste named Tombspawn for each creature card in their graveyard
Offering buffs, damage, and more vampire generation, this is a versatile planeswalker that provides plenty of power at any stage in your game