Eventide had a bunch of Kithkin, including Ballynock Trapper, Kithkin Spellduster, Kithkin Zealot, Patrol Signaler, and Springjack Shepherd
You drop things with blue pips to control the board and protect your commander while preparing for a Rogue's Passage and all the blue effects that sneak your creature in, like Aqueous Form
The sexy shapeshifter who really hates shirts and covering his abs returns in Lorwyn Eclipsed as Oko, Lorwyn Liege, a blue planeswalker that can transform into the green Oko, Shadowmoor Scion
By playing Paradox Engine, you are also untapping all of your Clocks for free mana on every spell you cast
Aside from making peoples lives miserable, Grixis is usually good at getting midrange value
Step 6: Crush the competition with a cataclysmic cavalcade of cats