A high-yielding gas energy pipeline ETF and two oil companies gushing cash make up a list of three great stocks to buy for future dividends.These three stocks offer investors huge dividend potential for many years. The Global X MLP ETF (MLPA 0.62%) invests in master limited partnerships (MLPs) in midstream pipelines and storage. Meanwhile, Devon Energy (DVN -2.31%) and Diamondback Energy (FANG -3.19%) are oil and gas exploration and production companies set to gush cash in 2025 and use it to enhance dividen ...