Nhek'Vil the Leecher

Lifeleech (Pay 2 life: Nhek'Vil the Leecher gets +2/+2 until end of turn. You may play this ability twice a turn.)
Fear
At the beginning of your turn, if you have paid life last turn as an additional cost to activate an ability, you gain X life, where X is equal to the life paid divided by 2 (rounded down).