Going with the removal that turn...
Untap, upkeep
Swamp
Supply-Line Cranes, targeting the Thunderhoof and thus triggering it's ability
Attack with the Thunderhoof
Responses/blocks/take it?
Spidey: 21
Hand: 9
Battlefield:
(T) Forest
(T,T) Plains x2
(T,U) Island x2
(T) Swamp
Font of Fertility (1G, Sac ~: Search my library for a basic land card, put it onto the battlefield tapped, and shuffle my library)
(U) Golden Hind (2/1; T: Add G to my mana pool)
(T) Pheres-Band Thunderhoof (6/7 from ctrs; Heroic-Whenever I cast a spell that targets ~, put two +1/+1 ctrs on ~) *3 +1/+1 ctrs*
(U) Ravenous Leucrocota (-4/4, Vigilance {6}{G}: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.) ~one, two, three~
(S) Supply-Line Cranes (2/4; Flying; When ~ ETB, put a +1/+1 ctr on target creature)
Garveyard: Nyx-Fleece Ram
Exile:
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Mooseman: 20
Hand: 10
Battlefield:
(T) Island
(T) Swamp
(T) Mountain
(TT) Forest
Pin to the Earth (Enchanted creature gets -6/-0.)
(U) Satyr Hoplite (1/1, Heroic — Whenever you cast a spell that targets ~, put a +1/+1 counter on ~.)
(T) Golden Hind (2/1, {T}: Add {G} to your mana pool.)
(U) Ravenous Leucrocota (2/4, Vigilance {6}{G}: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.)
(U) Grim Guardian (1/4, Constellation — Whenever Grim Guardian or another enchantment enters the battlefield under your control, each opponent loses 1 life. )
Graveyard: Desecration Plague
Exile: