Karumonix, the Rat King Thanks to Karumonix, the Rat Kings static ability, you only need to hit a given player with 10 rats to take them out of the game
When casting your Murktide Regent or Deaths Shadow for example, you should try to get them out of Unholy Heat range if possible
In the rare case where a legendary creature becomes a copy of another legendary creature with greater mana value (for example, if Sakashima the Impostor is a copy of a legendary creature with mana value 5 or greater), then when that creature dies, if it's still a legendary creature card in your graveyard, Havi's last ability will be able to target it
Even if Izzet remains at the top of the heap, theres no shortage of cool decks to try on ladder if youre bored with Magic.
Already the most expensive card in a rather cheap set, this legendary creature has rocketed up in price - though it dipped to $40 today, according to MTG Goldfish prices