This 1-drop 1/1 that cannot block can sacrifice to give it a +1/+1 boost
Much of Kruam's appeal is simply that it gives you access to blue and red in your commander deck, letting you have access to practically all the best colors in the game (sorry green)
"One day, I told him we were finished with our current batch so I wouldn't see him for a couple weeks, but then I was back a few days later with a stack of a hundred more pieces!" Zakeel : On behalf of Wizards of the Coast and both Magic and FINAL FANTASY fans around the world, I want to thank you for your time and cooperation over the last several years during the development of this project
Creature - Goblin Artificer Goblin Welder : Choose target artifact a player controls and target artifact card in that player's graveyard
Excruciator cannot block the Progenitor, but if Progenitus blocks the Excruciator, Progenitus will receive damage
Archangel of Tithes Archangel of Tithes is an angel that taxes both attackers and blockers, forcing them to pay 1 mana per creature