Its ultimate is an emblem version of Warstorm Surge, though you could cast that card for six mana anyway and forget the hassle of getting enough counters on the planeswalker
That said, there is one card in particular that has completely captivated my attention: Well, not exactly Blood Artist, but close: [card]Blood Artist[/card], combined with sacrifice outlets and creatures that leave behind tokens after dying, is the centerpiece of an archetype known as The Aristocrats, regardless of the format (and regardless of if there are any cards with the word aristocrat in the deck)
While the new limited print model itself isn't changing, starting with the Dungeons & Dragons 50th Anniversary Superdrop, we will be eliminating hard ending dates for Secret Lair sales events
Generally, wrath effects have a mana value of five or greater
Sygg, River Cutthroat
Of course, it's also efficient to play it on turn 1 or 3 when you have nothing else to do, and then exhaust it on turn 4