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

Lifelink {1}, Sacrifice this creature: Target creature or enchantment you control gains protection from the color of your choice until end of turn.

Bestow {3}{U}{U} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.) When this permanent becomes the target of a spell or ability, sacrifice it. Enchanted creature gets +4/+4 and has "When this creature becomes the target of a spell or ability, sacrifice it."

Whenever a creature dies, if an Aura you controlled was attached to it, return target creature card with mana value 2 or less from your graveyard to your hand.

Enchant creature Enchanted creature has defender. Prevent all combat damage that would be dealt by enchanted creature. Coven — {2}{W}, Sacrifice this Aura: Exile enchanted creature. Activate only if you control three or more creatures with different powers.

Enchant creature Enchanted creature has "Cumulative upkeep {1}." (At the beginning of its controller's upkeep, that player puts an age counter on it, then sacrifices it unless they pay its upkeep cost for each age counter on it.)

At the beginning of your upkeep, destroy the creature with the least power. It can't be regenerated. If two or more creatures are tied for least power, you choose one of them. When there are no creatures on the battlefield, sacrifice this enchantment.

Sacrifice this enchantment: Return target creature to its owner's hand.

Enchant green or white creature Enchanted creature has "At the beginning of your upkeep, sacrifice this creature unless you discard a card."

Enchant permanent As long as enchanted permanent is red or green, it has "At the beginning of your upkeep, sacrifice this permanent unless you pay its mana cost."