If you are worried about your life total and want to play discard anyway (for example against Sancifier en -Vec in Burn), you can play 1-2 copies of Inquisition of Kozilek instead
And if its later and you want to trade the attacking 3/3 for a nasty creature, knowing that the Champion is likely to be blocked and die, well, that was using it just like a four-mana sorcery that reads, Put a creature from your hand onto the battlefield. And dont forget the potential reusability of the Champions exert later, as well as Greens acceleration getting the Champion out and swinging earlier than its 4th turn sell-by date the other colors 4-drops would normally have
If you pair cards like Fleshbag Marauder with cards like Grave Pact or Dictate of Erebos, you have a reasonable shot at controlling the board
Alloy Animist At just 1 mana, Alloy Animist is one of the cheapest and most repeatable ways to turn artifacts into deadly creatures
You dont need to rush yourself to use them too soon either
Doomskar Warrior has quickly become a big favorite value engine and can lend its abilities (including trample) to Jared for an attack