This card's effect could be used to Summon "Laquari" and "Darius", Special Summon a "Gladiator Beast" from the Graveyard, and then contact fuse "Laquari", "Secutor" and the Summoned monster for "Heraklinos". Unlike the other options, this will leave yourself with a spare "Gladiator Beast".
If this card ends up in your Graveyard, bring it back with the effect of "Gladiator Beast Darius". From there, it can be contact fused for "Gladiator Beast Essedarii" or even perform an Xyz Summon for a Rank 4 monster.
More ranked monsters can also be Summoned through this effect:
Due to the release of "Gladiator Beast Samnite", "Secutor" gained much more power than before. Its new use goes as follows:
Summon "Rescue Cat", then send it to the Graveyard to Special Summon "Test Tiger" and "Samnite". Tributing the "Tiger", and then returning "Samnite" to the Deck, "Secutor" will be Special Summoned, and thus gain its effect. Then attack a Defense Position monster or simply make one such through "Book of Moon", or protect yourself through cards like "Waboku", and there will be a "Gyzarus" or "Heraklinos" on your field as early as the very first turn.