You also have sources that double damage to make the burn hurt that much more such as Twinflame Tyrant, City on Fire, Fiery Emancipation, and Gratuitous Violence
If you do play more than one copy of a legend, choose one to keep and put the other copy in the graveyard
Invisible Stalker is optimal, having both unblockability and hexproof to push damage, but if an opponent has gained infinite life, then Blighted Agent is an excellent plan B with poison counters
It aids Ti h in stacking hazards, and gains free entry on Electric attacks directed at my Skarmory / Milotic core
Another example of Chornicles cards is Ashnod's Altar, a card originally from Antiquities: The same remarks apply here: black border, anvil symbol on the right side of the card, and we don't find the year at the bottom