Since many of Dredges creatures enter from the graveyard, most removal spells arent effective against them since theyll usually just come back a turn after you remove them
Clearly the 24-land rule isnt a straightforward one-size-fits-all solution, so experiment and see which land counts work for you
Then discard two cards unless you discard an instant or sorcery card or a creature card with flying
Blue aggressive decks will usually be running equipment anyway just to make up for below average power and toughness monsters.This is more so the case as Trinket Mage and Grand Architect have good synergy with equipment making this a good card to use too
If you're completely new to competitive play, its worth starting with a full beginners guide to pokemon tournament to understand how events, formats, and progression actually work
There are (quickly checks the Wargamer guide) 1,025 Pokmon currently, and it seems a shame to shower a select few with numerous IR and ex cards, when others get none