Card Abilties
Unit Background
Eldiri Nimid seeks to bring about the Scattering, a time when its seeds shall spread across the planet, repopulating and rebuilding the great forest that once dominated the world when it was but a single continent. Many devotees of the Chosen Grove see the Scattering as an eminent event, and fervently hope they will bear witness. But the sacred tree plans far ahead, in a scale of time that mortals cannot comprehend, and if the Scattering ever finally arrives, there are none alive who will observe that momentous occurrence.
Card Strategy
This is the largest summoner in the game, and it starts up front, but it can't move. While it's tempting to be reckless with so much health, that's not the right path. The idea is that, by the time it moves, it should have enough HP remaining to fully exploit its 4 Strength. Still, it's okay to take damage early on if it means using that Strength, especially if it means fully using the unroot event.
Its ability to summon adjacent units may suggest that gates are less important for this faction, and that is true to an extent, butg ates are vital, not only as shields but to extend Eldiri's summoning range. One of the key early decisions is whether or not to place a gate in front of Eldiri, which can sometimes become a hindrance. Should you instead use Unroot to reposition Eldiri in the same column as the opponent's gate? Maybe even push it forward?
These decisions are matchup and context dependent, there are no easy universal answers.
Finally, Eldiri' ability to boost adjacent summoning units is straightforward and it' one of your main tools for empowering your board.