Library
Mechanics & Keywords
Mechanics are the rules ideas that make each game work. Each page explains one in plain language and links to cards that show it.
Browse by game
Pokémon TCG
EvolutionHow Basic Pokémon grow into Stage 1 and Stage 2 Pokémon.Prize CardsThe face-down cards that decide how a game is won.Weakness & ResistanceType matchups printed on every Pokémon card.Abilities & Pokémon PowersSpecial effects that are not attacks.Trainer CardsItem, Supporter and Stadium cards that support the game plan.Pokémon ex & GXSpecial Pokémon groups that trade extra power for extra risk.
Magic: The Gathering
Mana & the Five ColorsThe resource system and the color pie behind every deck.FlyingA creature that can only be blocked by creatures with flying or reach.FlashCasting a creature or spell at instant speed.FlashbackCasting spells again from the graveyard.Transform & Double-Faced CardsCards with two faces that change during the game.EvokePaying a smaller cost for a one-time effect.DashCasting a creature with haste, then returning it to hand.Instants & the StackHow spells can be cast in response to each other.
Yu-Gi-Oh! TCG
Tribute SummoningSacrificing monsters to bring out stronger ones.Fusion SummoningCombining monsters into a new, stronger monster.Spell & Trap CardsThe non-monster cards that shape every duel.Extra Deck SummoningFusion, Synchro, Xyz, Pendulum and Link in one place.Alternate Win ConditionsWays to win without reducing Life Points to zero.
How we describe rules
We explain how a mechanic works in general terms and give examples from featured cards. We do not copy official rules text, and rules can change over time, so always check the publisher's rulebook for the current wording.