Muraganda Eldrazi is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Devoid (This card has no color.) Deworded (This creature counts as having no abilities.) When you cast this spell, put a primeval counter on target creature. (A creature with a primeval counter loses all abilities and can't gain abilities.)