Hellkite Charger can often deal 10 damage to a single player by itself, and it's at the forefront of many infinite combat combos
Sorcery Theft (CTRL to add secondary) Tokens Iraxxa, Empress of Mars Trample Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.) Paradox Whenever you cast a spell from anywhere other than your hand, create a 2/2 red Alien Warrior creature token
It also adds in the insurance of not allowing creatures to be regenerated, unlike Overwhelming Forces
We could easily pick reprints here or note the cards that werent previously Modern-legal, but now are - cards like Shardless Agent and Counterspell are obviously incredibly exciting
For my purposes, library manipulation is something that lets you choose which card to draw out of several cards, usually on top of your library
The longer our dredge chain is, the easier to get an overwhelming advantage early in the game