Making a macro to "Cast x if possible, but if not cast y"

[Elvenbane-veknilash (Elvenbane)]

The one pinned in these forums:

@Adreaver-undermine

Table of Contents:

1. Intro - Macro Basics
2. Macros - What can they do?
3. Macros - What can they NOT do?
4. Conditionals - How do they work?
5. Scripting - What is possible in a macro?
6. Macros - Tips, Tricks, and Shortcuts