On play, you get two of your inked cards back into your hand while everything else in your inkwell gets exerted
Pick your favorites among your colors to bring your deck to 22 or 23 cards, and then you're good to go from the spell side
That means it can only be blocked with two or more Creatures, and when its dealing no damage, thats not really worth it
Untapping creatures to block is sexy
Paying 1 mana or 2 life to draw a card and see whats going on in your opponents hand is strong and has additional synergies in spellslinger decks, storm decks, Death's Shadow decks, and more
You can pay one black mana and sacrifice another creature to have a player mill three cards, which is cool, but you can also pay one life to add one colorless mana which can only be used to cast spells from your graveyard