Amelioratus, Magic Engineer

{t}: Change the text of target permanent or spell
by replacing all instances of, choose one —
• one color word with another.
• one basic land type with another.
• one creature type with another.
{bull} + with -, and vice versa.
(This effect lasts indefinitely.)
Amelioratus, Magic Engineer gets +1/+1 for
each altered permanent on the battlefield.