The Immortal Sun

Spells you control can't be countered.

At the beginning of your end step, discover 5. (Exile cards from the top of your library until you exile a nonland card with mana value 5 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

At the beginning of your end step, if you control no untapped lands, draw a card.

At the beginning of your end step, if you control two or more other creatures, draw a card.

: Create a 1/1 colorless Soldier artifact creature token.

Unearth

As this artifact enters, choose a color.

Creatures you control of the chosen color get +1/+1.

Whenever a land's ability causes you to add one or more mana of the chosen color, add an additional one mana of that color.

Affinity for Slivers (This spell costs less to cast for each Sliver you control.)

Slivers you control have double strike and haste.

At the beginning of your upkeep, create two 1/1 colorless Sliver creature tokens.

Spells your opponents cast cost more to cast.

At the beginning of your end step, each opponent loses 1 life.