Infect sources include Ichor Rats , Blighted Agent , Phyrexian Juggernaut , and the one-hit-killer Blightsteel Colossus
There are also cards that change power and toughness, like Brine Hag for opposing creatures or Arni Brokenbrow for your own
The Fanatic was once one of the best Red one drops in a game
There were suddenly two types of players: those who played Seismitoad and those who tried to play something that would counter it

Abzan Falconer Abzan Skycaptain Adanto Vanguard Adarkar Sentinel Adherent of Hope Advance Scout Aegis of the Gods Aerial Caravan Aerial Extortionist Aerial Responder Aerie Auxiliary Aeronaut Cavalry Affa Protector Ageless Guardian Agent Bishop, Man in Black Agent Venom Agrus Kos, Eternal Soldier Agrus Kos, Wojek Veteran Ainok Bond-Kin Air Marshal Ajani's Chosen Ajani's Comrade Ajani's Pridemate Akiri, Line-Slinger Akrasan Squire Akroan Crusader Akroan Hoplite Akroan Jailer Akroan Phalanx Akroan Sergeant Akroan Skyguard Akron Legionnaire Alaborn Grenadier Alaborn Musketeer Alaborn Trooper Alaborn Zealot Alert Shu Infantry Alistair, the Brigadier Ambush Paratrooper Ampryn Tactician Anafenza, Kin-Tree Spirit Anafenza, Unyielding Lineage Anafenza, the Foremost Anax and Cymede Angelfire Crusader Angelic Quartermaster Anim Pakal, Thousandth Moon Aradesh, the Founder Aragorn, Hornburg Hero Arcbound Javelineer Arcbound Shikari Archetype of Courage Ardent Militia Ardent Recruit Ardent Soldier Argivian Phalanx Armament Corps Armament Master Armored Guardian Armory Guard Ascending Aven Asphodel Wanderer Atlantean Cavalry Attendant of Vraska Auriok Bladewarden Auriok Edgewright Auriok Glaivemaster Auriok Salvagers Auriok Steelshaper Auriok Sunchaser Auriok Survivors Auton Soldier

Although this doesnt seem like much on the surface, its a lot of money