A 4-mana 4/4 creature with first strike and trample is a good beater, and it tutors up not one, but two other pieces
Jeremy Jones playing Mono Blue Control Game 1: I have very little memory of this game, but what stands out is that Jeremy finds and casts a Jayemdae Tome, and starts drawing cards with only about 10-15 cards left in his library
Abundance combined with the Library to allow you to draw three cards a turn without paying the life
Ignoring the text, it even has the same appearance as a Filler Card
4 Withering Torment A Rare Removal Spell Enchantment removal in black is a rare find, so much so that there are only five other black cards that deal with enchantments, and only one other one is actually playable
If you want to create a Shadowborn Apostle style of deck and focus on having as many copies of the same card as possible, Relentless Rats is a better option than Rat Colony because it gets +1/+1 buffs for each copy of it in play