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With Delney out, all creatures you control with a power of two or less cant be blocked by your opponents creatures with power three or more

The answer to both is a resounding yes

Now from my personal experience with the previous digital rendition of Magic The Gathering (MTG Online) I can say that the MTG community leaves a lot to be desired, like most online communities

Release Date: 9th August 2024

If you didn't put any cards into your graveyard when you manifested dread (perhaps because your opponent controls Leyline of the Void), Paranormal Analyst's ability will still trigger, but you won't be able to put any cards into your hand when it resolves