Yeah, I had a fairly good hand and as it turns out, draws. And probably amplified by your slow start
Untap, upkeep, Draw
Veteran Motorist, scrying 2 and putting one of the cards on the bottom of my library and keeping the other on top.
Tap the Motorist to crew the Heart
Attack with the Heart for 6
Done
Spidey: 20
Hand: 2
Library: 49
Battlefield:
(T) Plains
(T,U) Mt x2
(U) Inspiring Vantage (~ ETB tapped unless I control two or fewer lands.; T: Add R or W to my mana pool)
(T)
Heart of Kiran (4/4; Flying; Vigilance; Crew 3; I may remove a loyalty ctr from a planeswalker I control rather than pay ~'s crew cost)
(U)
Toolcraft Exemplar (Dwarf Artificer;
2/2 from Depala; At the beginning of combat on my turn, if I control an artifact, ~ gets +2/+1 ueot. If I control three or more artifacts, it also gains first strike ueot)
(U)
Scrapheap Scrounger (3/2; ~ cannot block; 1B, Exile another creature card from my graveyard: Return ~ from my graveyard to the battlefield)
(U)
Depala, Pilot Exemplar (3/3; Other Dwarves I control get +1/+1.; Each Vehicle I control gets +1/+1 as long as it's a creature.; Whenever ~ becomes tapped, I may pay X. If I do, reveal the top X cards of my library, put all Dwarf and Vehicle cards from among them into my hand, then put the rest on the bottom of my library in a random order)
(T)
Veteran Motorist (Dwarf Pilot;
4/4 from Depala; When ~ ETB, scry 2.; Whenever ~ crews a Vehicle, that Vehicle gets +1/+1 ueot)
Graveyard:
Exile:
=================================================================================================
Oversoul: 12 6?
Hand: 5
Library: 49
Battlefield:
(T) Swamp
(U,T) Forest x2
(U)
Winding Constrictor (2/3; If one or more counters would be placed on an artifact or creature I control, that many plus one of each of those kinds of counters are put on that permanent instead. If I would get one or more counters, I get that many plus one of each of those kinds of counters instead.)
(S)
Winding Constrictor (2/3; If one or more counters would be placed on an artifact or creature I control, that many plus one of each of those kinds of counters are put on that permanent instead. If I would get one or more counters, I get that many plus one of each of those kinds of counters instead.)
(S)
Scrapheap Scrounger (3/2; ~ cannot block; 1B, Exile another creature card from my graveyard: Return ~ from my graveyard to the battlefield.)
Graveyard:
Exile: