Orbs of Warding

You have hexproof. (You can't be the target of spells or abilities your opponents control.)
If a creature would deal damage to you, prevent 1 of that damage.

Lifegift

Whenever a land enters, you may gain 1 life.

Katabatic Winds

Phasing (This phases in or out before you untap during each of your untap steps. While it's phased out, it's treated as though it doesn't exist.)
Creatures with flying can't attack or block, and their activated abilities with {T} in their costs can't be activated.

Mesmeric Orb

Whenever a permanent becomes untapped, that permanent's controller mills a card.

Zuran Orb

Halana, Kessig Ranger

Reach
Whenever another creature you control enters, you may pay {2}. When you do, that creature deals damage equal to its power to target creature.
Partner (You can have two commanders if both have partner.)

City of Solitude

Players can cast spells and activate abilities only during their own turns.

Gaea's Anthem

Sol Ring

Choke

Islands don't untap during their controllers' untap steps.

Dense Foliage

Creatures can't be the targets of spells.

Trudge Garden

Whenever you gain life, you may pay {2}. If you do, create a 4/4 green Fungus Beast creature token with trample.

Old Gnawbone

Flying
Whenever a creature you control deals combat damage to a player, create that many Treasure tokens.

Black Vise

As Black Vise enters, choose an opponent.
At the beginning of the chosen player's upkeep, Black Vise deals X damage to that player, where X is the number of cards in their hand minus 4.

Raking Canopy

Whenever a creature with flying attacks you, Raking Canopy deals 4 damage to it.

Kaysa

Gravity Well

Whenever a creature with flying attacks, it loses flying until end of turn.

Jeweled Lotus

{T}, Sacrifice Jeweled Lotus: Add three mana of any one color. Spend this mana only to cast your commander.

Ankh of Mishra

Whenever a land enters, Ankh of Mishra deals 2 damage to that land's controller.

Root Maze

Omnath, Locus of Mana

You don't lose unspent green mana as steps and phases end.
Omnath, Locus of Mana gets +1/+1 for each unspent green mana you have.

Orb of Dreams

Familiar Ground

Each creature you control can't be blocked by more than one creature.

Static Orb

As long as Static Orb is untapped, players can't untap more than two permanents during their untap steps.

Melira, Sylvok Outcast

You can't get poison counters.
Creatures you control can't have -1/-1 counters put on them.
Creatures your opponents control lose infect.

Winter Orb

As long as Winter Orb is untapped, players can't untap more than one land during their untap steps.