Forest

Harmonic Sliver

All Slivers have "When this permanent enters, destroy target artifact or enchantment."

Sliver creatures you control have flying and haste.

Sliver creatures you control have vigilance. (Attacking doesn't cause them to tap.)

Create two 1/1 colorless Sliver creature tokens.

Sliver creatures you control have "{T}, Discard a card: Draw a card."

Sliver creatures you control have "{2}: Untap this creature."

Sliver creatures you control have "{T}: Add one mana of any color."

Transguild Promenade enters tapped.
When Transguild Promenade enters, sacrifice it unless you pay {1}.
{T}: Add one mana of any color.

Sliver creatures you control have trample. (A creature with trample can deal excess combat damage to the player or planeswalker it's attacking.)