As a player casts an omen card, the player chooses whether they cast the card normally or as an Omen
Once you suit this pseudo-flying creature up with an Ethereal Armor and Ancestral Mask, your opponents find themselves facing down a massive, unblockable, untargetable creature that grinds them into the ground
Then this process is repeated for each remaining instruction to explore. Rule 701.40d, Official Magic: The Gathering Rules, Page 134 This isnt technically a change , per say, but rather a clarification
If your goal is to mitigate the effects of being mana hosed, you can look for cheap cards that have the ability to answer or trade with more expensive cards
Then announce your interrupt before another spell is cast
Before the banning of Parallax Tide in January, Enchantress was a rather polarizing archetype