If I play Summon: Bahamut, and you Tidebind the chapter's trigger on the stack, you not only counter the trigger, but also remove all of Summon: Bahamuts abilities, including the chapter abilities
Put plainly, in four-player Commander, these cards can totally wreck
Brawl Legal Vintage Legal Timeless Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Not Legal Toolbox Buy This Card Notes and Rules Information for Terra, Herald of Hope: You don't choose a target for Terra's last ability at the time it triggers
They're not too expensive, and they're a very effective way to learn how to play
If its not played immediately, I think it would only need one or two more cards to tip it over the edge
For this reason, Enchanted cards from every set frequently top the list of Lorcanas most expensive cards