For example, if one of Helvault's activated abilities is copied and two cards are exiled, they both return when Helvault is put into a graveyard from the battlefield
Power/Toughness: This is important for combat as they pair toughness and against power and vice versa Colour Types There are 5 main colors to Magic: The Gathering with a few more unique ones added over the last couple of decades
Ankle Biter Caustic Bronco Constrictor Sage Enduring Tenacity Fangkeeper's Familiar Jade-Cast Sentinel Lasyd Prowler Mold Adder Naga Fleshcrafter Rottenmouth Viper Scalding Viper Scathing Shadelock Serpent Specialist Sidisi, Regent of the Mire Skyserpent Seeker Soulcoil Viper South Wind Avatar Sultai Devotee The Serpent Society Vizier of the Menagerie
My particular favourite is Yunas Whistle a heartbreaking moment in the game meant to help Tidus find her again even over great distances, but here its used to call a creature from your deck, making you search for it until you hit one and actually being able to call it forth unlike poor Tidus in game Listen to my story The Commander format already lends itself well to the FF setting being a multiplayer version of the game so it feels a lot like forming a party with an unlikely band of heroes and dealing with some particularly vicious villains
But the chasest of the chase are the serialized versions, which go for hundreds of dollars (even for cards with regular versions that cost a few bucks)