If you skew your deck towards creatures, cards that you want to run anyway -- like Vivien, Champion of the Wilds, Arlinn, the Pack's Hope, and Ranger Class, all top Werewolf support cards -- get even stronger
(A copy of a permanent spell becomes a token.) The triggered ability and the copy it creates will resolve before the spell that caused it to trigger
To prevent this, the Cascade rules errata from 2021 now says "you may cast that spell without paying its mana cost if its mana value is less than this spell's mana value"
Old Fogey: A creature card from the "Unhinged" set with a whimsical depiction of an old man
When you exile a commander normally, it often just returns to the command zone to be cast again
Once I settled on a "colors matter" theme, I started looking for mechanical components that would care