Im not going to read the lore of every one of them
"Mill" is a colloquial term that originates from the card Millstone, used here to mean "putting the top cards of a player's library into his or her graveyard." For example, you could say, "In the finals of the Pro Tour Qualifier, Herbert cast Tome Scour to mill away my final five cards, dashing my chances of playing on the Pro Tour." There are many players who will play with Tome Scour in their decks
A great rare
She works great with the bounce package, with Steel damage to finish off characters after her 2 Strength attack, or to fend off those pesky budget Ruby/Emerald decks
Monument to Endurance just so easily slots into many strategies, pays for itself very quickly, and is one of the most useful cards to pull from Aetherdrift
Token doublers can also help increase Malcators output, and youll get some extra value out of your artifacts if youre able to play enough in a turn