Haliya, Guided by Light has become a common inclusion in Modern Boros Energy decks, synergizing strongly with Ocelot Pride, as well as its go-wide package
In addition, Tymna brings white mana to the deck, allowing for the inclusion of more powerful combos
The archetype took a big hit when Karn, the Great Creator was banned, but now it appears to be back with Outcaster Trailblazer (prerelease) offering a card advantage engine as the deck slings its big creatures
Beyond Devoted Druid shenanigans things become a bit murky because some decks that could use Tyvar will still want Grist instead, but Tyvar does offer some interesting possibilities in other decks
Witch Hunter is both white direct damage and repeatable bounce
Its not like Modern or Legacy where you can just look up the ideal land count