Every creature in the deck is a giant, and even three of the non-creature spells, Feudkiller's Verdict, Favor of the Mighty, and Crush Underfoot have the giant subtype thanks to their tribal card type
Playing a lot of games with the same deck will help you learn which of your cards are overperforming and which ones are underperforming
Whelming Wave $1 The line about Octopuses and Krakens will be fun for a small number of casual players (such as myself) who love sea monsters, but for the most part you can sharpie that clause right out of this card
I too share the same feelings, as I too felt clueless to what was happening for the first few times, dont be afraid, ask questions and pay careful attention
The most broken thing you can do with this card is to remove all the counters from your suspended spells, getting them quickly onto the battlefield or making your vanishing cards last longer