Theyre not essential, but can add value if they fit your strategy
Spark Double also seems key, since Gyruda, Doom of Depths triggers whenever it enters the battlefield if you can mill a reanimate a Spark Double you can make a non-lgendary copy of Gyruda, Doom of Depths, giving you another enters the battlefield trigger to repeat the process
For three Blue mana, this is a Sorcery spell that makes each opponent mill fourteen cards
It's impossible to know for sure, but unlike some of the decks we discussed earlier (Squirrels, Slivers), there's a decent chance that they could be real
To make this happen, you'll need Port Razer in play with the helm attached to it and at least one opponent that can't block Port Razer