mtg cards that target multiple creatures magic the gathering - Can I use strive to target the same object more than once?

If an effect would put one or more counters on a permanent you control, it puts twice that many of those counters on that permanent instead

It can safely tap any untapped dwarf you control to give a target creature +2/0 for a turn

Hardened Scales is probably the first card anyone thinks of when thinking of +1/+1 counters, and it even drove the namesake of some historically successful Modern decks aptly named Scales decks

Official MTG details and rulings for Littjara Kinseekers, Creature Shapeshifter from J22 (315) (English)

Affordable and versatile, it ensures that even the most cost-conscious decks can keep the board in check