Giving a creature you control protection from a given colour in response to removal or the like is absolutely vital
In practice, its more like a slow Red Wrath of God
There's a reason delve is considered one of the best abilities of all time, with Temporal Trespass being a major reason as to why
Blacksmiths Skill Hexproof and indestructible for a single mana is a nice rate, to be honest, and Blacksmith's Skill is a little better than that, giving you a power and toughness boost if youve built your deck correctly
She has Haste and Friends Forever, and whenever you cast your second spell each turn, untaps a target creature and investigates
Some cards are only worth a few cents, while others are almost priceless