black hates green though..
i could make it cost 2 less.... they have massacre... a free 4cc spell.. against white.
here's some example of some green hate...
Bereavement, 1B (7th Edition Uncommon)
Enchantment Whenever a green creature is put into a graveyard from play, its controller discards a card from his or her hand.
Deathgrip, BB (5th Edition Uncommon)
Enchantment BB: Counter target green spell. Play this ability as an interrupt.
Irini Sengir, 2BB (Homelands Uncommon) Summon - Legend [2/2]
White enchantments and green enchantments each cost an additional 2 to cast.
Leshrac's Sigil, BB (Ice Age Uncommon) Enchantment
BB: When any opponent successfully casts a green spell, look at that player's hand and choose a card; he or she then discards that card. Use this ability only once each time a green spell is cast.
BB: Return Leshrac's Sigil to owner's hand.
Nature's Ruin, 2B (Portal Uncommon)
Sorcery Destroy all green creatures. (This includes your green creatures.)
Perish, 2B (Classic 6th Edition Uncommon)
Sorcery Destroy all green creatures. They can't be regenerated.
Slay, 2B (8th Edition Uncommon) Instant
Destroy target green creature. It can't be regenerated. Draw a card.
heres another color it hates.. white
Dread of Night, B (Classic 6th Edition Uncommon)
Enchantment White creatures get -1/-1.
Execute, 2B (8th Edition Uncommon)
Instant Destroy target white creature. It can't be regenerated.
Draw a card.
if you'll notice... execute and slay have the same costs and correspond to both white and green.. making them equally hated..
Gloom, 2B (5th Edition Uncommon)
Enchantment
White spells cost an additional 3 to play. Activated abilities of white enchantments cost an additional 3 to play.
Jovial Evil, 2B (Legends Rare)
Sorcery Jovial Evil does 2 damage to opponent for each white creature he or she controls.
for 3: deal 10 damage to a white weenie player... although legends power.. it still illustrates it.
Soul Rend, 1B (Mirage Uncommon)
Instant Bury target creature if it is white.
Draw a card at the beginning of the next turn's upkeep.
Virtue's Ruin, 2B (Portal Uncommon)
Sorcery
Destroy all white creatures. (This includes your white creatures.)
again just like natures ruin.. same cost and everything... notice how most anti green cards are usually anti white as well... the paladins east and west have the same cost as well..
Tourach's Chant, 1BB (Fallen Empires Uncommon)
Enchantment
During your upkeep, pay B or bury Tourach's Chant.
Whenever a player puts a forest into play, Tourach's Chant deals 3 damage to him or her unless that player puts a -1/-1 counter on a target creature he or she controls.
for only 3, for every forest an opponent plays, they lose a weenie elf, or take 3...
heres my biggest argument for the free cost..
Deepwood Legate, 3B (Mercadian Masques Uncommon)
Creature - Shade [1/1]
If an opponent controls a forest and you control a swamp, you may play Deepwood Legate without paying its mana cost.
B: Deepwood Legate gets +1/+1 until end of turn.
you get the equivalent of a looming shade... which costs 2B.. for free
dark banisihing also costs 2B.. and does the same...
eh? whattaya think?