Winning The game of Unstable Unicorns
They've won (besides, you can always just discard the magic card at the end of your turn anyhow).
Rules:

The first person to successfully collect the required
number of Unicorns in their Stable wins! Each Unicorn
card counts for one Unicorn (unless otherwise stated).


2 – 5 Players: 7 Unicorns to win
6 – 8 Players: 6 Unicorns to win