Karn, Silver Golem

Whenever Karn blocks or becomes blocked, it gets -4/+4 until end of turn.
{1}: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value until end of turn.

Kaysa

Greater Good

Sacrifice a creature: Draw cards equal to the sacrificed creature's power, then discard three cards.

Thriss, Nantuko Primus

{G}, {T}: Target creature gets +5/+5 until end of turn.

Seton, Krosan Protector

Tap an untapped Druid you control: Add {G}.