Athreos, Shroud-Veiled provides insurance against both of these weaknesses by being indestructible, frequently avoiding creature status, and through use of its coin counters
Bident of Thassas main effect suits decks with evasive creatures and/or lots of cheap creatures that you don't mind sending forth as lemmings, but its activated ability can also pave the way for bigger threats
A two-mana creature that fixes your mana for turns three and beyond is solid, helping to accelerate you past your opponents and start casting larger and more powerful spells
That -6 ability will be partially good as green tends to suffer a bit from reliable sources to draw cards
Back it up with protection from Lightning Greaves, Swiftfoot Boots, or Mithril Coat, and you can often go the distance in just a couple of attacks
How does Menace damage work