Phishing does not fall under the scope of the Discord bug bounty. Not sure if this is responsible disclosure, but it sure is fun.
TL;DR: You can use Unicode characters that mimic colons in markdown links to create very realistic looking links. I use the Hebrew Punctuation Sof Pasuq character:
Then just use it in a Markdown link in the text. For example, [https׃ //google.com](https://youtube.com) - the first colon is not actually colon.
"Oh cool Discord made Markdown links"
"How should I rickroll people with this...?"
"Nope anything starting with http:// or https:// as text doesn't work"
"Hey wait what if I replaced one of the characters at the start"
GG
I then proceeded to abuse this by trolling people with fake links