Ivern was made to be a supportive jungler that's why his main and only role is Support. he can help a lot and out play with bushmaker, have a powerful shield, epic and light speed jungle clear, poke with daisy and cc with rootcaller. Still he can very hardly solo kill and most times die 1v1. How can you take advantage of the Green Father and win an easy game?

This build is made for starters so the runes are made for low elo players consisting ap and defenses. If you want instead of ap build tank.

As mentioned, Ivern is a support jungler so consider Windspeaker's instead of any other mastery. Because he is squishy too, the 12 remaining points should be placed in the Resolve tree.

Take a talisman for start and refillable potion preferably. Build chalice and upgrade to skirmsher's. take an oracle alt. and Redemtion. Late game build iron solari and guardian angel so you can survive the battle for more time. also before iron solari upgrade to runic echoes or cinderhulk. Also z'zrot is a great item potentially.

As a jungler, take flash and smite.

Use your Friend of the Forest to take jungle easily and smite blue preferably to have sustain and high mana. For epic monsters, use Oracle and use your Bushmaker to kill the monster without being seen.

Use your Bushmaker in order to be unseen and then when you get close it depends on the allied champion you gank. If it is a melee champion like Renekton Jax Yasuo e.t.c. use your triggerseed on them if it is bot lane or ranged champ like orianna, use your rootcaller first.

Use your Bushmaker to juke and hide low health champions your triggerseed when its needed and your daisy to poke and cc.