You can never go wrong with a good Coat...or:
Belbe's Portal (a bit expensive, though)
Brass Herald (also expensive, but fairly useful)
Doom Cannon (very expensive, but great with fast mana + constant tokens)
Urza's Incubator (not bad, really)
If it's for Type 2, your only options would be Coats & Cannons. 1.X, 1.5, & 1 can use all, though.