Valakut, the Molten Pinnacle [Zendikar]Set: Zendikar Type: Land Rarity: Rare Valakut, the Molten Pinnacle enters the battlefield tapped. Whenever a Mountain enters the battlefield under your control, if you control at least five other Mountains, you may have Valakut, the Molten Pinnacle deal 3 damage to any target. {T}: Add {R}.

Set: Ravnica: City of Guilds Type: Legendary Creature — Elf Warrior Rarity: Rare Cost: {4}{G}{W} Other green creatures you control get +1/+1

Set: Platinum: Arceus Type: Lightning Rarity: Ultra Rare Retreat cost: Colorless

time crawls

Creatures you control get -1/-1

Set: Neo Discovery 1st Edition Type: Fire Rarity: Rare Retreat cost: Colorless

you may pay {2}{G}

Set: Mirrodin Type: Artifact Rarity: Rare Cost: {6} {6}

Set: Sword & Shield: Chilling Reign Type: Psychic Rarity: Secret Rare Retreat cost: Colorless

Dunno how to count no more

{1}{W}: Creatures you control with defender can attack this turn as though they didn't have defender

Set: Sword & Shield: Darkness Ablaze Type: Colorless Rarity: Secret Rare Retreat cost: Colorless

Other creatures you control with flying get +0/+1