Send 1 "Ojama" card from your hand or face-up from your field to the GY; add to your hand 1 "Ojama" monster with a different name and 1 "Armed Dragon" monster from your Deck and/or GY , then, immediately after this effect resolves, you can Normal Summon 1 of those monsters. During your Main Phase: You can banish this card from your GY, then target 3 of your banished "Ojama" monsters; shuffle them into the Deck, then draw 1 card.
Ojamas are the fuel to Ojamatch which means you are required to run them, because you will need to discard one of these monsters to activate Ojamatch. Ojamatch can be searched by Ojama Blue, and conversely you can also add Ojama Blue to your hand with Ojamatch.
A combo you can do to search lots of cards out of your deck is set Ojama Blue and wait for your opponent to destroy it to search out any 2 of Ojama Yellow/Black/Green. During the End Phase activate Ojamatch to discard an Ojama monster to search out Ojama Blue and Armed Dragon LV3. Summon the Armed Dragon LV3 During your opponent's End Phase so that you can summon Armed Dragon LV5 out of your deck during your standby phase. The Ojama Blue you searched can then be set again to repeat this combo.
Ojamatch can be used to search and then immediately normal summon Armed Dragon LV3 and LV5. But Armed Dragon LV7 would be the most useless to search with Ojamatch since he cannot be normal summoned and has no use in your hand. However, if you already have Armed Dragon LV7 on your field, you can search Armed Dragon LV10 and normal summon the Ojama you searched, then tribute Armed Dragon LV7 to special summon Armed Dragon LV10
Ojamatch has an effect that lets you recycle banished Ojama monsters and draw a card, so here are the most common ways how your Ojamas will be banished.
Using Fusion Gate to summon a monster banishes the fusion materials you used. Summoning 1 Ojama King or at least 2 Ojama Knights will let you have enough Banished Ojamas to use Ojamatch's recovery effect.
Ojamassimilation banishes multiple Ojama monsters (up to 3 because of monster zone limitations.) so that you can special summon as many LIGHT Machine-type monsters listed as fusion materials from your deck. You can then use Ojamatch to recover these Ojama monsters. However this might be redundant as Ojamassimilation already has a similar recovery effect.