mtg cards like intruder alarm [MTGO] Intruder Alarm - #1 Ultimate

Bat-Lore A literal beacon that summons our seven-mana commander in times of emergency

You get a full two turns to play these cards so the impulse effect is fairly lenient and because at the time of writing this card has been recently printed, it's very accessible too, much cheaper than the identical Reckless Impulse

Brawl Not Legal Vintage Legal Timeless Not Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Not Legal Baldur's Gate Wilderness Dungeon Crash Landing Search your library for a basic land card, reveal it, put it into your hand, then shuffle

Deathbonnet Sprout / Deathbonnet Hulk For decks that focus on graveyard synergies, Deathbonnet Sprout is an affordable creature that will gradually fill your graveyard over time

To wit, upon casting Shahrazad, the two players leave the 'main' MTG game they are playing, and then play a MTG sub-game with their hands as their decks and the loser having his/her life total cut in half

Commanding Conclusion Queen Marchesa | Illustration by Kieran Yanner Knights can be a super thematic creature type to build around