Terra, Magical Adept / Esper Terra Milling five and possibly drawing an enchantment makes Terra, Magical Adept a strong enabler
The obvious place to start is cards which trigger when they become tapped, or when other creatures become tapped
Winterspell also introduces the Super keyword, appearing on Darkwing Duck cards
When it enters, it brings another dragon back from your graveyard straight onto the battlefield, immediately rebuilding your board after a wipe or giving you extra value in grindy games
Magic: The Gathering 's Commander format doesn't tend to encourage scrying, as the decks are too large and there's too little consistency for scrying to be effective with 100 unique cards
Cards like Valkyrie Harbinger, Griffin Aerie, and Crested Sunmare flood the board with tokens