Mageta the Lion

{2}{W}{W}, {T}, Discard two cards: Destroy all creatures except for Mageta the Lion. Those creatures can't be regenerated.

Kaysa

Kongming, "Sleeping Dragon"

Juniper Order Advocate

As long as Juniper Order Advocate is untapped, green creatures you control get +1/+1.

Reflecting Pool

{T}: Add one mana of any type that a land you control could produce.

Eladamri's Call

Search your library for a creature card, reveal that card, put it into your hand, then shuffle.

Loyal Retainers

Sacrifice Loyal Retainers: Return target legendary creature card from your graveyard to the battlefield. Activate only during your turn, before attackers are declared.

Captain Sisay

{T}: Search your library for a legendary card, reveal that card, put it into your hand, then shuffle.