If you control no Special Summoned monsters: Tribute 1 face-up Level 4 Normal Summoned/Set monster; draw 2 cards. You can only activate 1 "Soul Transition" per turn. You cannot Special Summon monsters the turn you activate this card.
Spirit monsters are relatively good cards to tribute, since they will return to your hand at the end phase.
Tributes for cost / You draw cards
Prevents your Special Summons
I tried this card with Exodia deck, and it’s not bad for getting your level 4 search monsters in the grave for their search effect. Once your opponent sees that your playing Exodia (if they’re competent), they won’t attack your monsters until they’re can OTK you, so this is a good way to accomplish that if they stall back on you.
Let's think a bit more about traps timing, what about "econ take" your lvl 4 enemy monster, and use this card, you'll waste 3 cards x killing 1 monster and drawing 2 cards, butttt, we'll have cards like treeborn frog, wich will reborn on your standbyphase and then you can tribute sumon and get a high direct atack (you draw 2 cards, so you may draw into another useful cards to make another combo)