After resolving the card effect, all actions go directly to the Discard Pile, located just below your deck
Nimble Obstructionist prevents effects activated or triggered abilities, and Teferi, Mage of Zhalfir has a static effect that changes all opponents' spells to sorcery-speed Removals are important for dealing with dangerous permanents or STAX pieces, strategy based on disruption, taxes and resource constraints
Ragost wants to sacrifice artifacts to zap every opponent, but this ability causes him to tap
The spells you're going to want the most are what are called "removal spells"these are the spells that permanently neutralize your opponent's creatures by either dealing damage, keeping them tapped, or just straight up destroying them
Pair it with Crop Rotation or Life from the Loam to keep your graveyard full and your knight gigantic
There are some pleasant synergies with this card that can soft lock your opponents out through resetting persist with things like Hex Parasite