Sed nigromántica

Soif nécromantique

Sete Necromantica

Necromantic Thirst

Enchant creature
Whenever enchanted creature deals combat damage to a player, you may return target creature card from your graveyard to your hand.

Conspiracy

Ravnica: City of Guilds

Salvat 2005

The target is chosen just after any creatures dealt lethal damage at the same time that the enchanted creature dealt damage have been put into the graveyard. That might include the enchanted creature itself, if it had trample and was blocked, for example.