Bloodtracker
Creature — Vampire Wizard
Flying
, Pay 2 life: Put a +1/+1 counter on this creature.
When this creature leaves the battlefield, draw a card for each +1/+1 counter on it.
"Flee all you like. The further you run the more firmly I feel your heartbeat."
Magali Villeneuve
Treasure Chest (PZ2)
• #70689Rulings
If enough -1/-1 counters are put on Bloodtracker at the same time to make its toughness 0 or less, the number of +1/+1 counters on it before it got any -1/-1 counters will be used to determine how many cards you draw. For example, if there are three +1/+1 counters on Bloodtracker and it gets six -1/-1 counters, you'll draw three cards. That's because Bloodtracker's triggered ability checks the creature's existence just before it leaves the battlefield, and it still has all those counters on it at that point.
(wotc • 2018-07-13)
Rulings
If enough -1/-1 counters are put on Bloodtracker at the same time to make its toughness 0 or less, the number of +1/+1 counters on it before it got any -1/-1 counters will be used to determine how many cards you draw. For example, if there are three +1/+1 counters on Bloodtracker and it gets six -1/-1 counters, you'll draw three cards. That's because Bloodtracker's triggered ability checks the creature's existence just before it leaves the battlefield, and it still has all those counters on it at that point.
(wotc • 2018-07-13)