Tizil Britce

When Tizil Britce enters the battlefield and at
the beginning of your upkeep, you may put a
time counter on Tizil Britce.
{x}: Tizil Britce becomes a X+1/X+1 until end of
turn, where X is the amount of time counters on
Tizil Britce
Sacrifice Tizil Britce: Put target creature with converted mana value of X or less from your graveyard onto the battlefield, where X is the
amount of time counters Tizil Britce had on the battlefield.