The right response, as any deckbuilding Johnny will tell you, is constantly "up to possible". In Magic it is simple to create a deck that'll put unlimited items into play:
4 Seat associated with Synod 4 Tree of Tales 4 Ancient Den 4 Great Furnace 4 Vault of Whispers 4 Island 4 Kuldotha Forgemaster 4 Vedalken Engineer 1 Darksteel Colossus 4 Kaleidostone 4 Everflowing Chalice 4 Brittle Effigy 4 Mycosynth Lattice 4 Summoning facility 4 Thornbite team 2 Akroma's Memorial 1 Legacy Weapon
See this short article for the full description of how to get infinite Pincher tokens (Mycosynth Lattice-d so they really are also items) into play, but we feature an excerpt that should supply you with the concept:
With a Staff'ed Forgemaster, give up three other items to stimulate the Forgemaster. (they may be such a thing form combo-related cards.) Summoning Station will untap thrice, making three artifact Pincher tokens. Meanwhile, your recently untapped Forgemaster (because of the Staff) has fetched a Darksteel Colossus. Today continue doing this process, except you will compromise two of those Pinchers together with Colossus itself. Considering that the Colossus shuffles it self back in your library, you will find it once more (or Legacy Weapon.) In this way we wont come to an end of items to help keep the motor operating.