Play with the top card of your library revealed.
You may play lands and cast spells from the top of your library.
{1}{U}: Surveil 1.

Gain control of target non-Totem creature. Tap that creature. It doesn't untap during its controller's next untap step.
Invoke {1}{U}

Enchant Totem
Enchanted Totem gets +1/+1.
Whenever enchanted Totem deals combat damage to a creature, tap that creature. It doesn't untap during its controller's next untap step.

Put target creature into its owner's library second from the top.

Defender
At the beginning of combat on your turn, any number of target creatures you control with defender become blue Elemental Drakes with base power and toughness each equal to that creature's toughness and have flying, and lose all other abilities until end of turn.

Surveil 1, then draw a card.
Invoke {2}{U}

Enchant Totem
Enchanted Totem gets +1/+3.

Defender
{6}{U}, Sacrifice Keeper of Kugaq: Draw three cards.

Counter target creature spell or spell with invoke. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Draw X cards, where X is one plus the number of Mantra cards in your graveyard.

Unite with one or more creatures
When Monastery Flagdancers unites creatures, return up to X target nonland permanents to their owner's hands, where X is the number of creatures it united.

Flying
Unite with three creatures
When Pass Pilgrim unites creatures, draw a card.

Defender
{1}{U}, {T}: Target player mills X cards, where X is the number of creatures with defender you control.

Unite with two creatures
When Seekers of Khembul unites creatures, it can't be blocked this turn.

This spell costs {1} less to cast for each card type among cards in your graveyard.
Surveil 3, then draw three cards.

Counter target spell unless its controller pays {4}. Surveil 2.

Flying
When Silverfrost Monal enters, you may discard a card. When you do, tap target creature and that creature doesn't untap during its controller's next untap step.

When Sojourner Pilgrim enters, return target instant or sorcery card from your graveyard to your hand.

Master of Subjugated Spirit
Whenever one or more creatures you control deal combat damage to an opponent, draw a card.

Return target nonland permanent to its owner's hand.
Invoke {3}{U}{U}{U}

Enchant Totem
When Deepdrift Totem enters, draw cards equal to enchanted creature's power.
Enchanted Totem gets +2/+2.

Flying

Defender, hexproof
{2}{U}: Submerged Icehorn loses hexproof until end of turn. It may attack as though it didn't have defender this turn.

{R}{G}: Target creature you control gets +1/+0 and gains trample until end of turn.

Whenever you cast an instant or sorcery spell from your hand, you may cast target instant or sorcery card with lesser mana value from your graveyard without paying its mana cost. If that spell would be put into your graveyard this turn, exile it instead.