The block in which the above post is included has a merkle root of 3944ccf6e5c3a436e94035918f42a8dac0246124.
To find the winner we:

1. Convert the merkle root into base 10:
   3944ccf6e5c3a436e94035918f42a8dac0246124 = 326946779531660316483934985580789164557212082468.
2. Compute the residual after dividing by the number of tickets: 326946779531660316483934985580789164557212082468 mod 891 = 469.
3. This is the winning ticket, held by @havok777.

Congratulations!