They're generally written "[Cost]: [Effect]." Some keyword abilities (such as equip) are activated abilities and will have a colon in their reminder text
For a deckbuilder, theres an almost unlimited supply of cards to consider, and funnily enough, even some recent cards that arent played in Standard can find a home in Expanded
Cheap key cards: Gravecrawler, Cryptbreaker, Diregraf Captain, Undead Augur, Endless Ranks of the Dead, Plague Belcher
Below, well cover how many cards you can have in a Yu-Gi-Oh Master Duel deck and discuss how you should use those cards to have the best chance of winning
Entire archetypes would spawn attempting to and successfully breaking Dread Return, even without Bridge from Below