So as a recap, Echoing Truth destroys the Stinger, My worker gets the counter, blocks the Slith, you sac the Ghost to put regen shield on Slith, combat damage destroys my worker and your Slith regens.
(UU) plains x2
(T) AEther Vial (art) (At the beginning of your upkeep, you may put a charge counter on AEther Vial. (t) You may put a creature card with converted mana cost equal to the number of charge counters on AEther Vial from your hand into play) ~ 3C
(T) Arcbound Slith (art)(2/2) Modular 1, When Arcbound Slith deals combat damage to a player, put a +1/+1 counter on it.) ~ 2 +1/+1
(U) Emissary of Hope (white)(2/1),(Flying, Whenever Emissary of Hope deals combat damage to a player, you gain 1 life for each artifact that player controls.)
(S) Neurok Transmuter (blue) (2/2) (island) Targets creature becomes an artifact in addition to its other types until the end of turn. (island) Until the end of turn, target artifact creature becomes blue and isn't an artifact.
Graveyard: Echoing Truth, Pteron Ghost
(TT) Island x2
(T) Mirrodin's Core (T: Add 1 . T: Put a charge counter on ~. T, Remove a charge counter from ~: Add one mana of any color.)~1C~
(S) Spire Golem (A) (2/4,Flying. Affinity for Islands (This spell costs 1 less to play for each Island you control.))
Graveyard: Arcbound Stinger , Arcbound Worker