If I have {Muraganda Petroglyphs} and {Life and Limb} in play, do my saprolings get the +2/+2? I have a feeling I won't like the answer...
305.6. The basic land types are Plains, Island, Swamp, Mountain, and Forest. If an object uses the words "basic land type," it's referring to one of these subtypes. A land with a basic land type has the intrinsic ability "{T}: Add [mana symbol] to your mana pool," even if the text box doesn't actually contain that text or the object has no text box. For Plains, [mana symbol] is {W}; for Islands, {U}; for Swamps, {B}; for Mountains, {R}; and for Forests, {G}. See rule 107.4a. Also see rule 605, "Mana Abilities."
Sorry. 😢
Well at least I can attack with a bunch of them with 3 Petroglyphs out and when they don't block my 1/1s I destroy my {Life and Limb} with {Nullmage Shephard}'s ability :)