Going through this list, there are going to be two different types of card: those that are at their most powerful in small formats due to either raw power level or to pushing out other options, and those that are most powerful in larger formats where synergies allow them to be pushed to their fullest potential
If you do, exile them, then meld them into Ragnarok, Divine Deliverance
Following the same principle, you can adjust your land count based on the number of cost-effective mana-producing creatures in your deck like Llanowar Elves, or cards that help you retrieve lands like Many Partings, which essentially functions as having an extra land in hand
Sterling Grove One of the core cards of the Enchantress archetype in Legacy, Sterling Grove largely made other enchantments you controlled invulnerable to interaction
You can also use flash humans like Cathar Commando to rebuy Counterspells, as otherwise youll be limited to flashing back at sorcery speed
Aetherdrift - Start Your Engines // Max Speed Best card: Mendicant Core, GuidelightMendicant Core, Guidelight Runner-up: Samut, the Driving ForceSamut, the Driving Force "Start your engines" grants the player its first point of speed, which will increase by one during said player's turn if an opponent loses life, but it will do so only once