Magic: The Gathering Comprehensive Rules Changes - Ravnica: City of Guilds to Guildpact

Old rule (Ravnica: City of Guilds)	New rule (Guildpact)
502.9b. [Click to view all changes.]
502.9b. The controller of an attacking creature with trample first assigns damage to the creature(s) blocking it. If all those blocking creatures are assigned lethal damage, any remaining damage is assigned as its controller chooses among the blocking creatures and the defending player. When checking for assigned lethal damage, take into account damage already on the creature and damage from other creatures that will be assigned at the same time (see rule 502.9e). The controller need not assign lethal damage to all blocking creatures but in that case can't assign any damage to the defending player.	502.9b. The controller of an attacking creature with trample first assigns damage to the creature(s) blocking it. If all those blocking creatures are assigned lethal damage, any remaining damage is assigned as its controller chooses among those blocking creatures and the defending player. When checking for assigned lethal damage, take into account damage already on the creature and damage from other creatures that will be assigned at the same time (see rule 502.9e). The controller need not assign lethal damage to all those blocking creatures but in that case can't assign any damage to the defending player.

Old rule (Ravnica: City of Guilds)

New rule (Guildpact)

502.9b.

The controller of an attacking creature with trample first assigns damage to the creature(s) blocking it. If all those blocking creatures are assigned lethal damage, any remaining damage is assigned as its controller chooses among the blocking creatures and the defending player. When checking for assigned lethal damage, take into account damage already on the creature and damage from other creatures that will be assigned at the same time (see rule 502.9e). The controller need not assign lethal damage to all blocking creatures but in that case can't assign any damage to the defending player.

502.9b.

The controller of an attacking creature with trample first assigns damage to the creature(s) blocking it. If all those blocking creatures are assigned lethal damage, any remaining damage is assigned as its controller chooses among those blocking creatures and the defending player. When checking for assigned lethal damage, take into account damage already on the creature and damage from other creatures that will be assigned at the same time (see rule 502.9e). The controller need not assign lethal damage to all those blocking creatures but in that case can't assign any damage to the defending player.