Llanowar Elves is one of the most famous cards in all of Magic, and one of the most fundamental
And as you start assembling your new Commander deck, using durable mtg card sleeves is a simple way to keep your cards protected during frequent shuffling and long multiplayer sessions.
It only need you to run a single copy of Vampire Hexmage in your deck
Draw Next, Ursula draws her cards
If your opponent points a removal spell at your creature, you can Donate that creature to your opponent and draw a card, then the removal spell still kills that creature
They will not be Scarecrow cards in you library, graveyard etc for effects that search for creature types, and they will not be Scarecrow spells on the stack, but they will be Scarecrow creatures at all times as long as you control them