And then if you have an enchantment enter the battlefield under your control, you draw a card
They can be targeted, stolen, placed in the graveyard, or placed in your hand just like any regular creature card
Group Hug and Kingmaker strategies are hard to quantify
Genesect adds some much-needed consistency to the equation
However, there are phenomenally rare occasions where a team is so badly outmatched that even the massive amount of points from a caught Golden Snitch is not enough to secure a victory, in which case catching the Snitch becomes an Instant Loss Condition for the weaker team (the match ends, and the opposing team proceeds to win because they scored more points in goals than the Snitch is worth)
Then it's an actual Overrun on arrival to the battlefield as cheap as one mana if your graveyard has got those lands