Scalding Tarn, Pay 1 life, Sacrifice this land: Search your library for an Island or Mountain card, put it onto the battlefield, then shuffle.

Counter target instant or sorcery spell unless its controller pays

: Target Assembly-Worker creature gets +1/+1 until end of turn

Soul Aflame and it's legendary in addition to its other types

: Prevent all combat damage that would be dealt by target attacking creature this turn

that player loses 1 life

you gain 3 life

Creatures your opponents control enter tapped

As this artifact enters

Whenever another creature you control enters

look at the top six cards of your library

twice that many of those tokens are created instead

sacrifice it