The best example of an Effect Monster card is Slifer the Sky Dragon, a card that has an effect of establishing its Attack and Defense Points and whenever an opposing Monster card is activated by the opponent
The Green one Leyline of Mutation lets you play your stuff with the alternate one mana of each color option, like Fist of Suns, and this cannot be played outside of that color combo in Commander
But seriously, this card could be really broken
This book is worthy of a deep dive in-and-of-itself, but Im really here to cover what was included on page 144-146: its a little section about the Pokmon TCG Game Boy game, mostly about game features and wait, whats that
Gameplay Disney Lorcana , Ravensburgers very own TCG, shares some similarities with Magic: The Gathering while remaining distinctly unique