El'Sha, Heir to Mat'Selesnya

Partner with Rosina, Sage of the Conclave

When you convoke a spell, you gain 3 life and draw
a card.

{t}: Untap each creature you control that convoked
a spell this turn. Those creatures get +X/+X and
gain haste and trample until end of turn, where X
is the number of spells you have convoked this
turn.