Bloomvine Regent

If Bloomvine Regent enters at the same time as one or more other Dragons you control, its triggered ability will trigger for each of those Dragons, including itself.

If a spell is cast as an Omen, its controller shuffles it into its owner’s library instead of putting it into its owner’s graveyard as it resolves.

If an Omen spell is copied, that copy is also an Omen and is shuffled into its owner’s library as it resolves. Its owner still shuffles their library, but the copy ceases to exist as a state-based action.