Its hard to remove with Ward, and if this slots into an aggro strategy, itll help keep some cards flowing to your hand
Many of the cards in the deck deal with adding these counters, plus plenty of +1/+1 counters to your creatures, so you can bet that there are tons of ways to proliferate all your counters up to even higher levels and to keep your opponents constantly losing life through either combat or radiation
That is provided they make up numbers 680 to 689, as expected
Answers to planeswalkers are always great, and you cant underestimate the value of a good beater
Current prices seem very inflated, and whether they hold depends on how much the secondary market loves these promos
But this one is also half-protected from the opponents removal spells