Tovolar's Huntmaster and Winota, Joiner of Forces
1- Cast winota, joiner of forces
2- Attack with a non-human creature, and get a tovolar's huntmaster from the activation.
3- Tovolar's huntmaster does not gain indestructible.
I've tested this using other daybound/nightbound cards, and am able to replicate. It's not an issue with Tovolar's Huntmaster specifically, it happens with any daybound/nightbound creature.
It also doesn't always fail to give the creature indestructible. If there are multiple ETB effects put on the stack immediately after the daybound/nightbound creature enters, it will grant indestructible. If only a single ETB effect is put on the stack, like the Huntmaster's, it won't grant indestructible. However, if you have it fail to grant indestructible, and then another Winota trigger brings in yet another of the exact same daybound/nightbound creature, it will retroactively grant indestructible to BOTH of them.
See event 243099405