The other ability is a Magecraft trigger, which is one of the new mechanics from Strixhaven: School of Mages, that activates whenever you cast or copy a sorcery or an instant
Krenko, Tin Street Kingpin grows in size over time, and makes more Goblins based on how big he is
And bouncing has a lot of flexibility as a way to survive removal or blocks, adding a useful tempo element, reloading a creature with a powerful enters-the-battlefield trigger, dealing with auras and so much more
[Deck Title= Rakdos Aggro Baker Neenan] [Creatures] 4 Bomat Courier 3 Kitesail Freebooter 4 Glint-Sleeve Siphoner 4 Goblin Rabblemaster 4 Knight of the Ebon Legion [/Creatures] [Spells] 3 Fatal Push 4 Smugglers Copter 4 Thoughtseize 3 Kolaghans Command 1 Harnessed Lightning 3 Dreadbore [/Spells] [Lands] 4 Aether Hub 2 Foreboding Ruins 4 Blood Crypt 5 Mountain 8 Swamp [/Lands] [Sideboard] 2 Liliana, the Last Hope 2 Collective Brutality 2 Rending Volley 2 Hazoret the Fervent 2 Kalitas, Traitor of Ghet 2 Grafdiggers Cage 1 Duress 2 Glorybringer [/Sideboard] [/Deck] The value of the looting from [Card]Smugglers Copter[/Card] shines even more in a tap-out disruptive aggro shell thats obligated to play more narrow removal and less generic disruption
That should be the entire section