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
Creatures (25) 4 Stratus Dancer 3 Dragonlord Ojutai 3 Silumgar Sorcerer 3 Icefall Regent 4 Faerie Miscreant 4 Archangel of Tithes 4 Thunderclap Wyvern Lands (26) Spells (10) I am skeptical, but Thunderclap Wyvern has some real appeal to it
4 Sentinel of Lost Lore Sentinel of Lost Lore's three abilities aren't very powerful individually, but a player can use all of them to maximize value just in case
All the ramp in this list costs nothing in card terms
And with this set being about 50% reprints I could probably fill this list with all reprints
In 2024, this card returned as part of Ravnica Remastered, and its easily that sets most expensive card