
Trample
At the beginning of your upkeep, exile a creature card from your graveyard. If you do, put a +1/+1 counter on this creature. Otherwise, sacrifice it.
, Discard a creature card: Put a +1/+1 counter on this creature.
Illustrated by Daniel Ljunggren · Guilds of Ravnica · #160
2018-10-05
You can’t choose not to exile a creature card from your graveyard if you have one to exile.
2018-10-05
You can activate Charnel Troll’s last ability during your upkeep before its triggered ability resolves.
2018-10-05
Because your upkeep step is after your untap step, your lands will be untapped to help you activate Charnel Troll’s last ability during your upkeep. However, because your upkeep step is before your draw step, you won’t have drawn a card for the turn yet.