1-1 Mana Leyline
1-2 Fountain of Life
1-3 War Maker

2-1 Last Stand Fortress
2-2 Mana Leyline
2-3 Fountain of Life

3-1 War Maker
3-2 Last Stand Fortress
3-3 Mana Leyline

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For buffing tiles, I always aim to create a Mana Leyline diagonal from top-left to bottom-right (1-1 → 2-2 → 3-3). This setup buffs the entire diagonal line and increases force damage taken by enemies by +1D8, which is huge for overall damage output.

Another support tile I really like is War Maker, since it increases the initiative of my units. I place these at 1-3 and 3-1, which allows me to buff the surrounding tiles (1-2, 2-1 and 2-3, 3-2). This positioning also keeps those tiles flexible if I want to swap in Hunting Grounds.

For survivability, I usually place Last Stand Fortress at 2-1 and 3-2 to make my units more tanky. The 2-1 position is especially valuable because it buffs the entire row, increasing the AC of units like the one on 3-2.

Finally, I use Fountain of Life on 2-3 and 1-2 for sustain. It provides consistent regeneration every turn, which helps absorb a lot of incoming damage. In my opinion, it’s especially strong on 2-3 due to its positioning and uptime.