A few mana creatures and ramp spells help, like Llanowar Elves and its reprint in Elvish Mystic
310.4c The defense of a battle on the battlefield is equal to the number of defense counters on it
Still, theres something to be said for cards that make your deck more consistent, so weve seen lots of players opt for 16 lands with 2 cyclers rather than 17 lands (like in Duskmourn )
Cards with Protoype have a special Prototype section of their text box, which, if youre casting the card normally, can be cheerfully ignored
And unlike The One Ring, there's no risk of accidentally killing yourself with it when you get a seriously silly number of counters on the Insight Engine
On top of all of that, Umbreons Evoblast attack actually encourages those who play the game to collect as many Eeveelution cards as possibleit has a base damage of 50 but adds 10 more for each Eeveelution card which the player has in play