RE: The New Starlight Set: Water Splinters

They are both elves. Use the elf archon and you can summon both in battle 😀

See sample battle. Grove Doomblade (Fire) is summoned by the elf archon.

https://splinterlands.com/battle/sl_52f9e8796b16d10cd6941392db9b8288?ref=logen9f