Mesa Enchantress

Whenever you cast an enchantment spell, you may draw a card.

Sythis, Harvest's Hand

Whenever you cast an enchantment spell, you gain 1 life and draw a card.

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

Creatures your opponents control enter tapped.
Whenever a creature an opponent controls enters, you gain 1 life.

{T}: Add {C}.
{1}{W}, {T}: Put target enchantment card from your graveyard on top of your library.

Whenever a creature you control enters, you gain 1 life.