Also known as the Great Oxidation Event[0].

  Although the event is inferred to have constituted a mass extinction,[7] due in part to the great difficulty in surveying microscopic organisms' abundances, and in part to the extreme age of fossil remains from that time, the Great Oxidation Event is typically not counted among conventional lists of "great extinctions", which are implicitly limited to the Phanerozoic eon. In any case, isotope geochemistry data from sulfate minerals have been interpreted to indicate a decrease in the size of the biosphere of >80% associated with changes in nutrient supplies at the end of the GOE.

[0] https://en.wikipedia.org/wiki/Great_Oxidation_Event

This is my biggest complaint with the Phyrexian plane.

Some say that rust is what they get their energy from.

We are ineffable! Dominaria will fall. ( edit: hope folks will appreciate the username ;) )

I just want to say that in case anybody plays with Warlock II on DotPW (Manalink), if you add 1 Elesh Norn, 1 Grisselbrand instead of Living Wish, the deck becomes too lethal to even exist.

You've been playing the long game.

... please don't say you play Sheoldred

I remember when type 1 was called type 1. And kids discarding zero mana artifacts as useless.

Indeed. 70-ish years of exposure will kill you dead.

Well good thing it oxydates iron or we woudn't be able to move it in our body!

Currently imagining myself as some hideous beast that breathes the well-known toxic corrosive gas "oxygen".

Makes you think of the sulphur dioxide in Venus' atmosphere, and whether life could still evolve in those conditions.

This was the exact premise of Battlefield Earth. The invasion aliens couldn’t believed we needed oxygen