+1/+1 counters are classic, but loyalty counters, poison counters, and even shield counters are all worth duplicating
Card selection, which doesnt put you up a card but allows you to make some choices about the cards you do draw, isnt quite as good, but it can become so if its easier and/or cheaper to use or if it synergizes, and it provides a discard outlet
This attack also does 50 damage to 1 of your opponent's Benched Pokmon
While a two-mana tapper isnt exciting at all in 2025, it is a nice flavor fit given that coeurls often paralyze party members in-game
Were there any obvious ones I missed
The cost for Tom Bombadil has risen from $2.10 to $4.80 since last Monday, while Falco Spara has gone from a dollar to $2.20, according to MTG price tracking website MTG Goldfish