He should keep dropping towards $10 as we come up on Khans, and by next January hell probably be pretty close to his floor in the $7-$10 range
It's not really a very strong effect, but it's one of those big feel-good moments in Magic where you get to cast a big spell and flood the board with large creatures
While you need burden counters on The One Ring to actually draw a card, which technically is a restriction, tapping it puts a counter on it before you draw, so unless theres something like a Solemnity out, there is no restriction here
After all, MTG has over 250 creature types, each one of which could theoretically be a decks theme
The only card that cares about symbiotes as a creature type is Venom, Deadly Devourer
Its important to note that the only reason I got that far was having Scavenger Grounds ready for the Splendid Reclamation my opponent tried to resolveScavenger Grounds is so, so good