Ertai's Familiar

Until end of turn, target player can't cast instant or sorcery spells, and that player can't activate abilities that aren't mana abilities. Draw a card.

Flying When this creature dies, shuffle it into its owner's library.

1, Exile the top card of your graveyard: Prevent the next 1 damage that would be dealt to target creature this turn.

Whenever a creature is put into your graveyard from the battlefield, you may sacrifice this enchantment. If you do, return that card to the battlefield.

Vigilance

Return target artifact or enchantment card from your graveyard to your hand.

Artifact and enchantment spells your opponents cast cost 2 more to cast. Sacrifice this enchantment: Destroy target artifact or enchantment.

Banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)