Moderation

• WWizards of the Coast2021-06-18
  Official Ruling
  Moderation's triggered ability works only while it's on the battlefield, so it doesn't let you draw a card when you cast it.
• WWizards of the Coast2021-06-18
  Official Ruling
  If an effect says you can't cast spells, and another effect instructs you to cast a spell, such as that of the ability that triggers when you remove the last time counter from a card with suspend, you won't be able to cast that spell.
• WWizards of the Coast2021-06-18
  Official Ruling
  If you cast Moderation, you've already cast at least one spell that turn (Moderation itself) so you won't be able to cast any more spells until the next turn. If Moderation comes under your control on a turn you haven't cast any spells, you'll be able to cast one spell that turn.

Rulings via Scryfall