Mezzio Mugger and Protection Racket are the two new cards that are going to give you this ability with the most efficiency
If we pull off just a 3-land turn, with both of these out, the Baloth will get to ridiculous size - 16/8 on the first drop, 40/12 on the second, and 88/16 on the third
Plenty of mono-white and Boros aggro decks already rely on combat tricks rather than anthems to enhance their threats, so existing aggro decks can easily use The Battle of Bywater without changing their card selection too much
Blasphemous Act deals 13 damage to every creature on the field, which most of the time is enough to wipe the whole field
Barals Expertise would be my pick for the most underrated card in the set currently, with the ability to reset the battlefield and cast a four-mana spell for free
These can be options printed on the card (e.g