It isnt impressive as a 5/5 trample, but its easy to gmake it a 9/9, and if you can pay the cost, were talking eight +1/+1 counters, effectively attacking as a 13/13
Additional ways of tapping for value are great too like Cryptolith Rite
Buy Now Add to Bag 1999 POKEMON JUNGLE KANGASKHAN #21 1ST EDITION PSA 9 MINT 53108078 $88.88 CERT NUMBER - 53108078LABEL TYPE - LIGHTHOUSELABELYEAR - 1999BRAND - POKEMON JUNGLECARD NUMBER - 21PLAYER - KANGASKHANVARIETY - 1ST EDITIONCARD GRADE - 9GRADE DESC - MINT GRADED - YESORIGINAL TEAM -
This means it doesnt apply any ETB (enter the battlefield) effects
As such, you will definitely want all of Parallel Lives , Anointed Procession , Mondrak Glory Dominus and possibly a Doubling Season in a flex slot
Normally, the planar controller is whoever the active player is