Horobi's Whisper [Betrayers of Kamigawa]

Horobi's Whisper [Betrayers of Kamigawa]Set: Betrayers of Kamigawa Type: Instant Arcane Rarity: Common Cost: {1}{B}{B} If you control a Swamp, destroy target nonblack creature. Splice onto ArcaneExile four cards from your graveyard. (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

Set: Zendikar Type: Enchantment Rarity: Uncommon Cost: {W} Whenever you cast a creature spell

When Kheru Spellsnatcher is turned face up

"Where'd all the birds go

you could run up a tree

1 Cemetery Reaper

you may flip it

Set: Worldwake Type: Creature — Kor Scout Rarity: Common Cost: {1}{W} Swampwalk (This creature can't be blocked as long as defending player controls a Swamp

But it doesn't stop there

Set: Commander's Arsenal Type: Enchantment Rarity: Common Cost: {2}{U} Whenever an opponent casts a spell

defending player sacrifices four permanents

Set: Fourth Edition Type: Creature — Snake Rarity: Common Cost: {G} Whenever Nafs Asp deals damage to a player

you may search your library for a basic Forest card