Adding a few Path to the Peak and maybe a Lost Vacuum [Crown Zenith] or two in your deck might allow you to steal some games from your opponent
An entire clans theme from Khans of Tarkir keyworded this effect as Formidable , and tons of Formidable cards still see play across formats, Temur Battle Rage being my favorite
Nekusar, the Mindrazer Nekusar, the Mindrazer often attracts new players due to its simplicity
You want Giada on the battlefield as soon as possible to make the most out of its effect
They carry the SR designation and represent the strongest, most competitive-demand cards in any given set
Dominaria, Innistrad and M12 all provide solid cards that can fit in most decks, as long as you disregard the cards that depend too much on synergies (UR wizards,Burning Vengeance,Tribal cards from Lorwyn, etc.)