There's no such thing as "3-5 150 Level summons" Summon tickets only gives you 3 - 5 (it depends on the ticket color and TAKE note the most of the summon tickets are RANDOM).
That's why the game is also known as RNG (Randon Number Generator). MOST Tickets gives you RANDOM RARITY characters. It could be a 2 star, 3 stars, 4 stars or 5 stars if you are lucky enough. ALL characters from the tickets are ALL Level 1! There's no 150 Level characters from the Summon Tickets! Just like any games out there! You need to grind and work your way up.
Mods make it more easier but there's no mods to modify such instant 5 star or 6 stars pulls! Nor gives you ORBS or instant 5 stars items! You need to go through FUSING! You need plenty of coins in order to do it. (No mods will help you get 1,000,000 golds coins in 1 click/tap). Again you need to work hard for it. This game is SERVER SIDED! You can't modify your in game currency.
and Yes.. like you said.. the only mods for this game are non-item based You have a great and blessed day Play hard!