If youre new, Tribute and Special Summon mechanics are classic Yu-Gi-Oh
Add 1 "Polymerization" Spell or "Fusion" Spell from your Deck to your hand, also you cannot Special Summon monsters from the Extra Deck for the rest of the turn, except Dragon or Plant monsters
This was especially valuable in the early days of One Piece, when hand-filtering effects weren't as common
After Link Monsters were introduced, monsters from the Extra Deck could only be Special Summoned from the Extra Deck to the Extra Monster Zone, or a Main Monster Zone a Link Monster "points to", up until the rule change for April 2020 onward, where only Link Monsters, and Pendulum Monsters Summoned from the Extra Deck while face-up, follow this restriction
You basically never want to cast this for anything less than X=3, so hes really a five or six drop at best