Fleet Swallower

Whenever Fleet Swallower attacks, target player mills half their library, rounded up.

Jace's Archivist

{U}, {T}: Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.

Target player mills half their library, rounded down.

At the beginning of each player's upkeep, that player mills X cards, where X is the number of cards in their hand.

Defender
Whenever Wall of Frost blocks a creature, that creature doesn't untap during its controller's next untap step.

Flying
Jace's Phantasm gets +4/+4 as long as an opponent has ten or more cards in their graveyard.

Landfall — Whenever a land you control enters, target player mills three cards.