Its a simple but powerful payoff that rewards you for attacking and messing with your graveyard
(They create a Clue token.) II, IV Create a 2/2 black Alien Angel artifact creature token with first strike, vigilance, and "Whenever an opponent casts a creature spell, this permanent isn't a creature until end of turn." People often assume that Sagas are a strict progression from top to bottom, but actually, from a non-linear, non-subjective viewpoint, it's more like a big ball of wibbly wobbly, timey-wimey
Packs are priced up to $49.99 and still include free shipping and a magnetic case
It caused issues for Play Design when balancing for Standard, and it simply does not function in Commander
I run four copies in a Modern poison counters deck, where that extra +1/+1 really makes a difference when I attack with a Phyrexian Crusader
When you put Dockside into games that drop more mana rocks and other permanents on T1-2, it can make an egregious amount of mana as early as Turn 2