Rotting Regisaur

At the beginning of your upkeep, discard a card.

Sylvan Caryatid

Defender, hexproof
{T}: Add one mana of any color.

Elvish Mystic

Shifting Ceratops

This spell can't be countered.
Protection from blue (This creature can't be blocked, targeted, dealt damage, enchanted, or equipped by anything blue.)
{G}: Shifting Ceratops gains your choice of reach, trample, or haste until end of turn.

Llanowar Elves

Fatal Push

Destroy target creature if it has mana value 2 or less.
Revolt — Destroy that creature if it has mana value 4 or less instead if a permanent you controlled left the battlefield this turn.

Siege Rhino

Trample
When Siege Rhino enters, each opponent loses 3 life and you gain 3 life.