Creature - Snake (1/2, green)
All enchantments can't be the target of instant or sorcery spells
Whenever ~this~ leaves the battlefield, destroy all lands

Converted mana cost: 6

Discard a card, Pay 2 life: all creatures with power 5 or more get -4/+4 until end of turn and attach target Equipment to target creature with toughness 3 or less. (Control of that Equipment doesn't change.) and ~this~ deals 3 damage to each creature with power 1 or less

Converted mana cost: 2

Creature - Cat (2/1, white)
As long as an opponent controls a creature, Threshold - If you have seven or more cards in your graveyard, vigilance
4W: ~this~ deals 4 damage to target attacking or blocking creature

Converted mana cost: 4