Aspects of all primals so far

[Bright-Flower]

I cant speak for Ramuh, though the Sylphs are lightning aspected creatures, so there is that. But as for Shiva, her ice aspect is a direct reference to Ysayle's past. It's one of the key hints about what the primals were at the time, besides the summoning itself. Everything about Shiva is a reference to something significant to Ysayle, the new Blue Magic skill acquired by Shiva even makes reference to this.

This was where I heard of the Halone link though it could be incomplete information or a false assumption.

https://ffxiv.gamerescape.com/wiki/Shiva