Scalding Tarn - Modern Masters 2017 (MM3){T}, Pay 1 life, Sacrifice Scalding Tarn: Search your library for an Island or Mountain card, put it onto the battlefield, then shuffle.

you may reveal that card and put it on top of your library instead of putting it anywhere else

"Organization is often undervalued but rarely unjustified

(The beginning phase includes the untap

Until the end of your next turn

return all cards exiled with it to the battlefield under their owners' control

When Seasoned Pyromancer enters the battlefield

Equipped creature gets +2/+0 and has indestructible

reveal the top X cards of your library

(Each of those players gets one life total back

"On this plane

the spirit of the divine called out of base metal

exile target creature an opponent controls until Stasis Snare leaves the battlefield