Strength of Unity

Enchant creature
Domain — Enchanted creature gets +1/+1 for each basic land type among lands you control.

Swamp

Tribal Flames

Domain — Tribal Flames deals X damage to any target, where X is the number of basic land types among lands you control.

Dream Thrush

Flying
{T}: Target land becomes the basic land type of your choice until end of turn.

Kavu Scout

Domain — Kavu Scout gets +1/+0 for each basic land type among lands you control.

Might of Alara

Domain — Target creature gets +1/+1 until end of turn for each basic land type among lands you control.

Terramorphic Expanse

{T}, Sacrifice Terramorphic Expanse: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Matca Rioters

Domain — Matca Rioters's power and toughness are each equal to the number of basic land types among lands you control.

Plains

Mountain

Aven Trailblazer

Flying
Domain — Aven Trailblazer's toughness is equal to the number of basic land types among lands you control.

Island

Drag Down

Domain — Target creature gets -1/-1 until end of turn for each basic land type among lands you control.

Exploding Borders

Domain — Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. Exploding Borders deals X damage to target player or planeswalker, where X is the number of basic land types among lands you control.

Grixis Illusionist

{T}: Target land you control becomes the basic land type of your choice until end of turn.

Evolving Wilds

{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.