Probius, the Curious Probe

At the end of your upkeep you get {e}{e}.
{e}: Create a 3/1 white artifact Cannon creature token with Defender and "This cannot block unless you control a Pylon."
{e}{e}: Create a blue artifact Pylon token with "At the end of your upkeep you get {e}."
{e}{e}{e}{e}: Cannon creature tokens you control get +1/+1 and lose defender until the end of the turn , Pylon tokens you control become 2/2 creatures in addition to their other types.