double token cards mtg Thopter // Dragon (0020) Double-Sided [Commander Masters Tokens] Token Creature — Spirit Copy Token - Double Masters

The one mana is a small price to pay

Delirium As long as there are four or more card types among cards in your graveyard, each opponent's maximum hand size is equal to seven minus the number of those card types

For a similar reason, I included Rogue's Passage which is also good once you have a big attacker like Blightsteel Colossus that you want to sneak through

Legendary Land Color tag templates(None) Reliquary Tower You have no maximum hand size

With very expensive cards it is good to be able to put them to other uses in the early game which is actually quite doable with Swallower despite having no built in ways of doing this