The best answer for this card is itself, which can lead to many matches becoming a Bowmasters-off
It is just a 1/1 for 2 mana though, and it can't block
Orb of Dragonkind Ramp and card selection all in one, Orb of Dragonkind is a slick little engine for dragon decks
If a creature enchanted with an Aura that has umbra armor would be destroyed by multiple state-based actions at the same time (most likely because a creature with deathtouch has dealt damage to that creature greater than or equal to its toughness), umbra armor's effect will replace all of them and save the creature
Rare Finds: Sometimes collectors sell off parts of their collections, which can lead to unexpected finds and rare cards at lower prices
The big problem, though, is getting to that four mana