// {T}: Add 1 to your mana pool.
this.addAbility(new ColorlessManaAbility());
// 3, {T}, Return Maze's End to its owner’s hand: Search your library for a Gate card, put it onto the battlefield, then shuffle your library. If you control ten or more Gates with different names, you win the game.
Ability ability = new SimpleActivatedAbility(Zone.BATTLEFIELD, new SearchLibraryPutInPlayEffect(new TargetCardInLibrary(filterCard)), new GenericManaCost(3));
ability.addEffect(new MazesEndEffect());
ability.addCost(new TapSourceCost());
ability.addCost(new ReturnToHandSourceCost());
this.addAbility(ability);