Each one was designed for a specific purpose, and each one executed them perfectly
If all of the permanents you controlled that were targets have left the battlefield by that point, the triggered ability will do nothing and no token will be created

Agent of Treachery Ancient Tomb Chalice of the Void Channel Chrome Mox Demonic Tutor Disruptor Flute Drannith Magistrate Field of the Dead Force of Will Gideon's Intervention Lutri, the Spellchaser Mana Drain Meddling Mage Natural Order Nexus of Fate Oko, Thief of Crowns Phyrexian Revoker Pithing Needle Runed Halo Sorcerous Spyglass Strip Mine Subtlety Tainted Pact Temporal Manipulation Time Warp Ugin, the Spirit Dragon Wash Away Competitive Brawl Banlist Competitive Brawl gets a separate ban list from Brawl, and here they are: Ajani, Nacatl Pariah / Ajani, Nacatl Avenger Nadu, Winged Wisdom Lutri, the Spellchaser Oko, Thief of Crowns Old Stickfingers Ragavan, Nimble Pilferer Rusko, Clockmaker Tamiyo, Inquisitive Student / Tamiyo, Seasoned Scholar Wrenn and Six Tajic, Legion's Valor Where to Play Brawl The biggest place to play Brawl is MTG Arena, largely because the format includes online-only cards from Alchemy sets

Meowth ex and Psyduck have also been crucial, with the former stabilizing strategies by bringing in a clutch Supporter card and the latter halting pesky Abilities like Dusknoirs Cursed Blast
Aside from being the set that brought us The Squirrel Who Shall Not Be Named, the major change to come out of Rise of the Floodborn was the viability of Steelsong decks
These are just a few of the things you can do with this cat, a true nightmare for your opponents