Effie, Fast Learner is a rare Legendary Creature — Human Survivor card from Alchemy: Duskmourn (YDSK), collector number 19.
Enlist Survival — At the beginning of your second main phase, if Effie is tapped, put a +1/+1 counter on each tapped creature you control. Then seek a Survivor card with mana value less than or equal to the number of tapped creatures you control.