This is most effective if youve got some strong enter triggers out on the battlefield, but either way Id save this in your hand until you need it to dodge removal or a board wipe
Smith, the Designer of the Altruism Playing Card Deck for The Blue Crown, found on his Behance account: Here is more work from Joshua M
Exile is not a typical effect for this low of a mana cost, just
Below, the set information can be found on the lower left corner of the card
Thats already excellent synergy, but thats not even the busted part
There are multiple very relevant threats which survive Lightning Bolt but die to Heat, such as [card]Yawgmoth, Thran Physician, Omnath, Locus of Creation, Crashing Footfalls, Primeval Titan, most Planeswalkers, Yorion, Sky Nomad, and the list goes on