what can i do with my 1000 myth crest i have on my character as he is laready full myth geraed in midnight wow>?

You can still use the 1000 Myth crest, but the best move depends on whether you want to save , craft , or convert it. In Midnight, Myth Dawncrest is mainly for upgrading Myth gear, and it can also be used when crafting Myth-track items at the top end of the season.

What you can do

• Hold it for future upgrades. If you are already fully geared now, keeping the crests is the safest play in case you pick up a better Myth item later, especially from raids or the vault.

• Use it on crafted Myth gear. Myth Dawncrest can set crafted items to the Myth item-level range, so it is useful if you still want a best-in-slot crafted piece later.

• Convert higher crests down or up. Midnight allows crest exchanges, so if you do not need Myth crests, you can trade them into lower tiers for other upgrades.

• Spend it only on real upgrades. If your character is truly done with Myth upgrades, dumping crests into a weaker piece usually gives less value than saving them for a future drop.

Best choice for a full Myth-geared character

If your character is already fully Myth geared, the smartest default is to keep the 1000 crests until you get a new Myth item worth upgrading. Myth crests are most valuable when they can push a fresh drop, a crafted item, or a vault reward into your final setup.

Practical rule

• If you raid or do high Mythic+, save them.
• If you are done pushing and just want currency value, convert them.
• If you plan a crafted best-in-slot piece later, reserve them for that.

TL;DR

Your 1000 Myth crests are not useless; they are basically a future-proof upgrade pool. If you are already fully Myth geared, the safest and usually best answer is to keep them until a new Myth piece, crafted item, or vault reward shows up.