Flying, haste, first strike.
Eliana Martínez can be played anytime you could play an instant. Whenever Eliana Martínez is put into a graveyard from play, you may pay (W)(W). If you do, return it to play under its owner's control.
(W)(U): Eliana Martínez gets +2/+1 until end of turn.
(U): Eliana Martínez can't be the target of spells or abilities this turn.
(W): Attacking doesn't cause Eliana Martínez to tap this turn.