(Damage and effects that say "destroy" don't destroy them.) Flying, lifelink Other creatures you control with flying have indestructible
If a creature you control attacking causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time
Giving all of your Zombies flying is already extremely appealing, especially alongside Commanders like Wilhelt, the Rotcleaver and The Scarab God which encourage you to build out a big board of Zombies
You'll get better information and fewer false positives
Sygg, River Guide Sygg, River Guide is a classic utility merfolk with a control-oriented feel
Each deck also comes with a 2-card Collector Booster Sample Pack containing 2 cards from the Duskmourn: House of Horror set, including 1 alt-border Rare or Mythic Rare and at least 1 Traditional Foil card