Terror is the worst of all basic creature destruction instants (Terror, Lightning Bolt, Swords to Plowshares), as it will not kill artifact or black creatures, and it costs an additional colorless (compared to Bolt or Swords)
Nagao, Bound by Honor Nagao, Bound by Honor is a decent creature that only takes one attack to buff all your samurai (including itself)
The other problem, mana-wise, is that a combat-focused deck wants to start getting creatures out quickly, but thats very challenging in a Dragon deck
4 Death Toll The Golgari Delirium A lot is going on with the Death Toll deck, a green and black deck with a focus on getting various card types in the graveyard to fuel multiple delirium triggers
MTGA is by far the most popular place to play Brawl, but you can also play via MTG Online or in real life if you want
Although it has no life aspect to it it just covers you nicely in the area you are most vulnerable while also being a fine stand alone card