Creatures you control have hexproof.

Creatures your opponents control lose hexproof and can't have or gain hexproof.

Flying, lifelink

Pegasus creatures you control have lifelink.

Constellation -- Whenever an enchantment enters the battlefield under your control, create a 2/2 white Pegasus creature token with flying.

+1: Look at the top four cards of your library. You may reveal an enchantment card from among them and put that card into your hand. Put the rest on the bottom of your library in a random order.

-3: Exile target creature or enchantment you don't control until target enchantment you control leaves the battlefield.

-7: Return all enchantment cards from your graveyard to the battlefield.

Return target nonland permanent you don't control to its owner's hand.

Overload {6}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Return up to X target artifact and/or non-Aura enchantment cards each with mana value X or less from your graveyard to the battlefield. If X is 6 or more, those permanents are 4/4 creatures in addition to their other types.

Creature and enchantment spells you control can't be countered.

{3}{G}: Target land you control becomes an X/X Elemental creature with trample and haste until end of turn, where X is the number of enchantments you control. It's still a land.

+2: Untap each enchanted permanent you control.

-1: Create a white Aura enchantment token named Mask attached to another target permanent. The token has enchant permanent and totem armor.

-7: Mill seven cards. Return all non-Aura enchantment cards from your graveyard to the battlefield, then do the same for Aura cards.

Estrid, the Masked can be your commander.

Whenever an enchantment is put into a graveyard from the battlefield, draw a card.

If you would draw a card while your library has no cards in it, you win the game instead.

If Leyline of Sanctity is in your opening hand, you may begin the game with it on the battlefield.

You have hexproof. (You can't be the target of spells or abilities your opponents control.)

Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.

As Runed Halo enters the battlefield, choose a card name.

You have protection from the chosen card name. (You can't be targeted, dealt damage, or enchanted by anything with that name.)

{W}, Sacrifice Soul Snare: Exile target creature that's attacking you or a planeswalker you control.