This deck is was a legal brawl until Fall of 2020, because it uses cards from Core 2021. There aren't enough Hydra's current with standard to update at the moment, so I am shifting this deck to Singleton. If it was a brawl deck, Gargos would be the commander.

When Gargos is on the battlefield (ideally with hexproof or indestructible), you can easily play a hydra every turn. If done right, it's possible to have 3+ hydras over 10/10 on turn 7 (I've dropped a 36/37 hydra on turn 5 once). The kill move is when you can assign them trample (which can be done either through an activated ability, instant, enchantment, or static ability depending on the card.) You can effectively play this once and catch your opponent by surprise, but not twice. It will make you a target.