Pithing Needle naming Grinning Ignus is preventing the activation of Grinning Ignus. This should not work, as the ability of Grinning Ignus is a mana ability. Pithing Needle states that it does not work on mana abilities.
This should be addressed. I know it's hard to actually make it a mana ability, but why can't MTGO label these abilities with a separate Bool as mana abilities, then prevent cards like Pithing Needle from stopping them if that flag is True? This is making a competitively viable deck much worse on MTGO than in paper.
I was playing this a game am my opponent was playing Pithing needle and i wan'ted to activate my card in response. However i was not able to tab my Lands for mana.
I was streaming my match and so this can be seen in this Vod;
at the Timestamp 57:30. Im not quite sure what happend here to be honest.