Some players may see the packs as bulk that bloats your collection, but if your collection is small, the cards go a long way with eternally playables like Path to Exile, Blood Artist and Herald's Horn at uncommon
Peregrine Drake There are several creatures that pay for themselves by untapping lands, including prominent examples like Cloud of Faeries and Palinchron
Mass Counter Making Next are the two that can mass put counters on things that arrive on your side or the enchantment that can make them uncounterable and then riot for counters or haste as best needed
Benthic AnomalyBenthic Anomaly also looks at your opponents creatures when you cast it, but instead of stealing them gives you a token copy of one of them with power and toughness equal to the total power and toughness of the chosen creatures
Or, if you're a big spender, you'll be interested in which rare Pokmon cards are going for top dollar these days
If an effect removes the highest Stage Evolution card from a Pokmon LV.X, the Pokmon LV.X is not considered an Evolution card